v23.08.00

🚨 Breaking Changes

• Enforce deprecations and add clarifications around existing deprecations (#13710) @galipremsagar
• Separate MurmurHash32 from hash_functions.cuh (#13681) @davidwendt
• Avoid storing metadata in pointers in ORC and Parquet writers (#13648) @vuule
• Expose streams in all public copying APIs (#13629) @vyasr
• Remove deprecated cudf::strings::slice_strings (by delimiter) functions (#13628) @davidwendt
• Remove deprecated cudf.set_allocator. (#13591) @bdice
• Change build.sh to use pip install instead of setup.py (#13507) @vyasr
• Remove unused max_rows_tensor parameter from subword tokenizer (#13463) @davidwendt
• Fix decimal scale reductions in _get_decimal_type (#13224) @charlesbluca

🐛 Bug Fixes

• Add CUDA version to cudf_kafka and libcudf-example build strings. (#13769) @bdice
• Fix typo in wheels-test.yaml. (#13763) @bdice
• Don't test strings shorter than the requested ngram size (#13758) @vyasr
• Add CUDA version to custreamz build string. (#13754) @bdice
• Fix writing of ORC files with empty child string columns (#13745) @vuule
• Remove the erroneous "empty level" short-circuit from ORC reader (#13722) @vuule
• Fix character counting when writing sliced tables into ORC (#13721) @vuule
• Parquet uses row group row count if missing from header (#13712) @hyperbolic2346
• Fix reading of RLE encoded boolean data from parquet files with V2 page headers (#13707) @etseidl
• Fix a corner case of list lexicographic comparator (#13701) @ttnghia
• Fix combined filtering and column projection in dask_cudf.read_parquet (#13697) @rjzamora
• Revert fetch-rapids changes (#13696) @vyasr
• Data generator - include offsets in the size estimate of list elments (#13688) @vuule
• Add cuda-nvcc-impl to cudf for numba CUDA 12 (#13673) @jakirkham
• Fix combined filtering and column projection in read_parquet (#13666) @rjzamora
• Use thrust::identity as hash functions for byte pair encoding (#13665) @PointKernel
• Fix loc-getitem ordering when index contains duplicate labels (#13659) @wence-
• [REVIEW] Introduce parity with pandas for MultiIndex.loc ordering & fix a bug in Groupby with as_index (#13657) @galipremsagar
• Fix memcheck error found in nvtext tokenize functions (#13649) @davidwendt
• Fix has_nonempty_nulls ignoring column offset (#13647) @ttnghia
• [Java] Avoid double-free corruption in case of an Exception while creating a ColumnView (#13645) @razajafri
• Fix memcheck error in ORC reader call to cudf::io::copy_uncompressed_kernel (#13643) @davidwendt
• Fix CUDA 12 conda environment to remove cubinlinker and ptxcompiler. (#13636) @bdice
• Fix inf/NaN comparisons for FLOAT orderby in window functions (#13635) @mythrocks
• Refactor Index search to simplify code and increase correctness (#13625) @wence-
• Fix compile warning for unused variable in split_re.cu (#13621) @davidwendt
• Fix tz_localize for dask_cudf Series (#13610) @shwina
• Fix issue with no decompressed data in ORC reader (#13609) @vuule
• Fix floating point window range extents. (#13606) @mythrocks
• Fix localize(None) for timezone-naive columns (#13603) @shwina
• Fixed a memory leak caused by Exception thrown while constructing a ColumnView (#13597) @razajafri
• Handle nullptr return value from bitmask_or in distinct_count (#13590) @wence-
• Bring parity with pandas in Index.join (#13589) @galipremsagar
• Fix cudf.melt when there are more than 255 columns (#13588) @hcho3
• Fix memory issues in cuIO due to removal of memory padding (#13586) @ttnghia
• Fix Parquet multi-file reading (#13584) @etseidl
• Fix memcheck error found in LISTS_TEST (#13579) @davidwendt
• Fix memcheck error found in STRINGS_TEST (#13578) @davidwendt
• Fix memcheck error found in INTEROP_TEST (#13577) @davidwendt
• Fix memcheck errors found in REDUCTION_TEST (#13574) @davidwendt
• Preemptive fix for hive-partitioning change in dask (#13564) @rjzamora
• Fix an issue with dask_cudf.read_csv when lines are needed to be skipped (#13555) @galipremsagar
• Fix out-of-bounds memory write in cudf::dictionary::detail::concatenate (#13554) @davidwendt
• Fix the null mask size in json reader (#13537) @karthikeyann
• Fix cudf::strings::strip for all-empty input column (#13533) @davidwendt
• Make sure to build without isolation or installing dependencies (#13524) @vyasr
• Remove preload lib from CMake for now (#13519) @vyasr
• Fix missing separator after null values in JSON writer (#13503) @karthikeyann
• Ensure single_lane_block_sum_reduce is safe to call in a loop (#13488) @wence-
• Update all versions in pyproject.toml files. (#13486) @bdice
• Remove applying nvbench that doesn't exist in 23.08 (#13484) @robertmaynard
• Fix chunked Parquet reader benchmark (#13482) @vuule
• Update JNI JSON reader column compatability for Spark (#13477) @revans2
• Fix unsanitized output of scan with strings (#13455) @davidwendt
• Reject functions without bytecode from _can_be_jitted in GroupBy Apply (#13429) @brandon-b-miller
• Fix decimal scale reductions in _get_decimal_type (#13224) @charlesbluca

📖 Documentation

• Fix doxygen groups for io data sources and sinks (#13718) @davidwendt
• Add pandas compatibility note to DataFrame.query docstring (#13693) @beckernick
• Add pylibcudf to developer guide (#13639) @vyasr
• Fix repeated words in doxygen text (#13598) @karthikeyann
• Update docs for top-level API. (#13592) @bdice
• Fix the the doxygen text for cudf::concatenate and other places (#13561) @davidwendt
• Document stream validation approach used in testing (#13556) @vyasr
• Cleanup doc repetitions in libcudf (#13470) @karthikeyann

🚀 New Features

• Support min and max aggregations for list type in groupby and reduction (#13676) @ttnghia
• Add nvtext::jaccard_index API for strings columns (#13669) @davidwendt
• Add read_parquet_metadata libcudf API (#13663) @karthikeyann
• Expose streams in all public copying APIs (#13629) @vyasr
• Add XXHash_64 hash function to cudf (#13612) @davidwendt
• Java support: Floating point order-by columns for RANGE window functions (#13595) @mythrocks
• Use cuco::static_map to build string dictionaries in ORC writer (#13580) @vuule
• Add pylibcudf subpackage with gather implementation (#13562) @vyasr
• Add JNI for lists::concatenate_list_elements (#13547) @ttnghia
• Enable nested types for lists::concatenate_list_elements (#13545) @ttnghia
• Add unicode encoding for string columns in JSON writer (#13539) @karthikeyann
• Remove numba kernels from find_index_of_val (#13517) @brandon-b-miller
• Floating point order-by columns for RANGE window functions (#13512) @mythrocks
• Parse column chunk metadata statistics in parquet reader (#13472) @karthikeyann
• Add abs function to apply (#13408) @brandon-b-miller
• [FEA] AST filtering in parquet reader (#13348) @karthikeyann
• [FEA] Adds option to recover from invalid JSON lines in JSON tokenizer (#13344) @elstehle
• Ensure cccl packages don't clash with upstream version (#13235) @robertmaynard
• Update struct_minmax_util to experimental row comparator (#13069) @divyegala
• Add stream parameter to hashing APIs (#12090) @vyasr

🛠️ Improvements

• Pin dask and distributed for 23.08 release (#13802) @galipremsagar
• Relax protobuf pinnings. (#13770) @bdice
• Switch fully unbounded window functions to use aggregations (#13727) @mythrocks
• Switch to new wheel building pipeline (#13723) @vyasr
• Revert CUDA 12.0 CI workflows to branch-23.08. (#13719) @bdice
• Adding identify minimum version requirement (#13713) @hyperbolic2346
• Enforce deprecations and add clarifications around existing deprecations (#13710) @galipremsagar
• Optimize ORC reader performance for list data (#13708) @vyasr
• fix limit overflow message in a docstring (#13703) @ahmet-uyar
• Alleviates JSON parser's need for multi-file sources to end with a newline (#13702) @elstehle
• Update cython-lint and replace flake8 with ruff (#13699) @vyasr
• Add __dask_tokenize__ definitions to cudf classes (#13695) @rjzamora
• Convert libcudf hashing benchmarks to nvbench (#13694) @davidwendt
• Separate MurmurHash32 from hash_functions.cuh (#13681) @davidwendt
• Improve performance of cudf::strings::split on whitespace (#13680) @davidwendt
• Allow ORC and Parquet writers to write nullable columns without nulls as non-nullable (#13675) @vuule
• Raise a NotImplementedError in to_datetime when utc is passed (#13670) @shwina
• Add rmm_mode parameter to nvbench base fixture (#13668) @davidwendt
• Fix multiindex loc ordering in pandas-compat mode (#13660) @wence-
• Add nvtext hash_character_ngrams function (#13654) @davidwendt
• Avoid storing metadata in pointers in ORC and Parquet writers (#13648) @vuule
• Acquire spill lock in to/from_arrow (#13646) @shwina
• Expose stable versions of libcudf sort routines (#13634) @wence-
• Separate out hash_test.cpp source for each hash API (#13633) @davidwendt
• Remove deprecated cudf::strings::slice_strings (by delimiter) functions (#13628) @davidwendt
• Create separate libcudf hash APIs for each supported hash function (#13626) @davidwendt
• Add convert_dtypes API (#13623) @shwina
• Clean up cupy in dependencies.yaml. (#13617) @bdice
• Use cuda-version to constrain cudatoolkit. (#13615) @bdice
• Add murmurhash3_x64_128 function to libcudf (#13604) @davidwendt
• Performance improvement for cudf::strings::like (#13594) @davidwendt
• Remove deprecated cudf.set_allocator. (#13591) @bdice
• Clean up cudf device atomic with cuda::atomic_ref (#13583) @PointKernel
• Add java bindings for distinct count (#13573) @revans2
• Use nvcomp conda package. (#13566) @bdice
• Add exception to string_scalar if input string exceeds size_type (#13560) @davidwendt
• Add dispatch for cudf.Dataframe to/from pyarrow.Table conversion (#13558) @rjzamora
• Get rid of cuco::pair_type aliases (#13553) @PointKernel
• Introduce parity with pandas when sort=False in Groupby (#13551) @galipremsagar
• Update CMake in docker to 3.26.4 (#13550) @NvTimLi...

v23.06.01

🚨 Breaking Changes

• Fix batch processing for parquet writer (#13438) @ttnghia
• Use <NA> instead of null to match pandas. (#13415) @bdice
• Remove UNKNOWN_NULL_COUNT (#13372) @vyasr
• Remove default UNKNOWN_NULL_COUNT from cudf::column member functions (#13341) @davidwendt
• Use std::overflow_error when output would exceed column size limit (#13323) @davidwendt
• Remove null mask and null count from column_view constructors (#13311) @vyasr
• Change default value of the observed= argument in groupby to True to reflect the actual behaviour (#13296) @shwina
• Throw error if UNINITIALIZED is passed to cudf::state_null_count (#13292) @davidwendt
• Remove default null-count parameter from cudf::make_strings_column factory (#13227) @davidwendt
• Remove UNKNOWN_NULL_COUNT where it can be easily computed (#13205) @vyasr
• Update minimum Python version to Python 3.9 (#13196) @shwina
• Refactor contiguous_split API into contiguous_split.hpp (#13186) @abellina
• Cleanup Parquet chunked writer (#13094) @ttnghia
• Cleanup ORC chunked writer (#13091) @ttnghia
• Raise NotImplementedError when attempting to construct cuDF objects from timezone-aware datetimes (#13086) @shwina
• Remove deprecated regex functions from libcudf (#13067) @davidwendt
• [REVIEW] Upgrade to arrow-11 (#12757) @galipremsagar
• Implement Python drop_duplicates with cudf::stable_distinct. (#11656) @brandon-b-miller

🐛 Bug Fixes

• Fix valid count computation in offset_bitmask_binop kernel (#13489) @davidwendt
• Fix writing of ORC files with empty rowgroups (#13466) @vuule
• Fix cudf::repeat logic when count is zero (#13459) @davidwendt
• Fix batch processing for parquet writer (#13438) @ttnghia
• Fix invalid use of std::exclusive_scan in Parquet writer (#13434) @etseidl
• Patch numba if it is imported first to ensure minor version compatibility works. (#13433) @bdice
• Fix cudf::strings::replace_with_backrefs hang on empty match result (#13418) @davidwendt
• Use <NA> instead of null to match pandas. (#13415) @bdice
• Fix tokenize with non-space delimiter (#13403) @shwina
• Fix groupby head/tail for empty dataframe (#13398) @shwina
• Default to closed="right" in IntervalIndex constructor (#13394) @shwina
• Correctly reorder and reindex scan groupbys with null keys (#13389) @wence-
• Fix unused argument errors in nvcc 11.5 (#13387) @abellina
• Updates needed to work with jitify that leverages libcudacxx (#13383) @robertmaynard
• Fix unused parameter warning/error in parquet/page_data.cu (#13367) @davidwendt
• Fix page size estimation in Parquet writer (#13364) @etseidl
• Fix subword_tokenize error when input contains no tokens (#13320) @davidwendt
• Support gcc 12 as the C++ compiler (#13316) @robertmaynard
• Correctly set bitmask size in from_column_view (#13315) @wence-
• Fix approach to detecting assignment for gte/lte operators (#13285) @vyasr
• Fix parquet schema interpretation issue (#13277) @hyperbolic2346
• Fix 64bit shift bug in avro reader (#13276) @karthikeyann
• Fix unused variables/parameters in parquet/writer_impl.cu (#13263) @davidwendt
• Clean up buffers in case AssertionError (#13262) @razajafri
• Allow empty input table in ast compute_column (#13245) @wence-
• Fix structs_column_wrapper constructors to copy input column wrappers (#13243) @davidwendt
• Fix the row index stream order in ORC reader (#13242) @vuule
• Make is_decompression_disabled and is_compression_disabled thread-safe (#13240) @vuule
• Add [[maybe_unused]] to nvbench environment. (#13219) @bdice
• Fix race in ORC string dictionary creation (#13214) @revans2
• Add scalar argtypes to udf cache keys (#13194) @brandon-b-miller
• Fix unused parameter warning/error in grouped_rolling.cu (#13192) @davidwendt
• Avoid skbuild 0.17.2 which affected the cmake -DPython_LIBRARY string (#13188) @sevagh
• Fix hostdevice_vector::subspan (#13187) @ttnghia
• Use custom nvbench entry point to ensure cudf::nvbench_base_fixture usage (#13183) @robertmaynard
• Fix slice_strings to return empty strings for stop < start indices (#13178) @davidwendt
• Allow compilation with any GTest version 1.11+ (#13153) @robertmaynard
• Fix a few clang-format style check errors (#13146) @davidwendt
• [REVIEW] Fix Series and DataFrame constructors to validate index lengths (#13122) @galipremsagar
• Fix hash join when the input tables have nulls on only one side (#13120) @ttnghia
• Fix GPU_ARCHS setting in Java CMake build and CMAKE_CUDA_ARCHITECTURES in Python package build. (#13117) @davidwendt
• Adds checks to make sure json reader won't overflow (#13115) @elstehle
• Fix null_count of columns returned by chunked_parquet_reader (#13111) @vuule
• Fixes sliced list and struct column bug in JSON chunked writer (#13108) @karthikeyann
• [REVIEW] Fix missing confluent kafka version (#13101) @galipremsagar
• Use make_empty_lists_column instead of make_empty_column(type_id::LIST) (#13099) @davidwendt
• Raise NotImplementedError when attempting to construct cuDF objects from timezone-aware datetimes (#13086) @shwina
• Fix column selection read_parquet benchmarks (#13082) @vuule
• Fix bugs in iterative groupby apply algorithm (#13078) @brandon-b-miller
• Add algorithm include in data_sink.hpp (#13068) @ahendriksen
• Fix tests/identify_stream_usage.cpp (#13066) @ahendriksen
• Prevent overflow with skip_rows in ORC and Parquet readers (#13063) @vuule
• Add except declaration in Cython interface for regex_program::create (#13054) @davidwendt
• [REVIEW] Fix branch version in CI scripts (#13029) @galipremsagar
• Fix OOB memory access in CSV reader when reading without NA values (#13011) @vuule
• Fix read_avro() skip_rows and num_rows. (#12912) @tpn
• Purge nonempty nulls from byte_cast list outputs. (#11971) @bdice
• Fix consumption of CPU-backed interchange protocol dataframes (#11392) @shwina

🚀 New Features

• Remove numba JIT kernel usage from dataframe copy tests (#13385) @brandon-b-miller
• Add JNI for ORC/Parquet writer compression statistics (#13376) @ttnghia
• Use _compile_or_get in JIT groupby apply (#13350) @brandon-b-miller
• cuDF numba cuda 12 updates (#13337) @brandon-b-miller
• Add tz_convert method to convert between timestamps (#13328) @shwina
• Optionally return compression statistics from ORC and Parquet writers (#13294) @vuule
• Support the case=False argument to str.contains (#13290) @shwina
• Add an event handler for ColumnVector.close (#13279) @abellina
• JNI api for cudf::chunked_pack (#13278) @abellina
• Implement a chunked_pack API (#13260) @abellina
• Update cudf recipes to use GTest version to >=1.13 (#13207) @robertmaynard
• JNI changes for range-extents in window functions. (#13199) @mythrocks
• Add support for DatetimeTZDtype and tz_localize (#13163) @shwina
• Add IS_NULL operator to AST (#13145) @karthikeyann
• STRING order-by column for RANGE window functions (#13143) @mythrocks
• Update contains_table to experimental row hasher and equality comparator (#13119) @divyegala
• Automatically select GroupBy.apply algorithm based on if the UDF is jittable (#13113) @brandon-b-miller
• Refactor Parquet chunked writer (#13076) @ttnghia
• Add Python bindings for string literal support in AST (#13073) @karthikeyann
• Add Java bindings for string literal support in AST (#13072) @karthikeyann
• Add string scalar support in AST (#13061) @karthikeyann
• Log cuIO warnings using the libcudf logger (#13043) @vuule
• Update mixed_join to use experimental row hasher and comparator (#13028) @divyegala
• Support structs of lists in row lexicographic comparator (#13005) @ttnghia
• Adding hostdevice_span that is a span createable from hostdevice_vector (#12981) @hyperbolic2346
• Add nvtext::minhash function (#12961) @davidwendt
• Support lists of structs in row lexicographic comparator (#12953) @ttnghia
• Update join to use experimental row hasher and comparator (#12787) @divyegala
• Implement Python drop_duplicates with cudf::stable_distinct. (#11656) @brandon-b-miller

🛠️ Improvements

• Bump typing_extensions minimum version to 4.0.0 (#13618) @shwina
• Drop extraneous dependencies from cudf conda recipe. (#13406) @bdice
• Handle some corner-cases in indexing with boolean masks (#13402) @wence-
• Add cudf::stable_distinct public API, tests, and benchmarks. (#13392) @bdice
• [JNI] Pass this ColumnVector to the onClosed event handler (#13386) @abellina
• Fix JNI method with mismatched parameter list (#13384) @ttnghia
• Split up experimental_row_operator_tests.cu to improve its compile time (#13382) @davidwendt
• Deprecate cudf::strings::slice_strings APIs that accept delimiters (#13373) @davidwendt
• Remove UNKNOWN_NULL_COUNT (#13372) @vyasr
• Move some nvtext benchmarks to nvbench (#13368) @davidwendt
• run docs nightly too (#13366) @AyodeAwe
• Add warning for default dtype parameter in get_dummies (#13365) @galipremsagar
• Add log messages about kvikIO compatibility mode (#13363) @vuule
• Switch back to using primary shared-action-workflows branch (#13362) @vyasr
• Deprecate StringIndex and use Index instead (#13361) @galipremsagar
• Ensure columns have valid null counts in CUDF JNI. (#13355) @mythrocks
• Expunge most uses of TypeVar(bound="Foo") (#13346) @wence-
• Remove all references to UNKNOWN_NULL_COUNT in Python (#13345) @vyasr
• Improve distinct_count with cuco::static_set (#13343) @PointKernel
• Fix contiguous_split performance (#13342) @ttnghia
• Remove default UNKNOWN_NULL_COUNT from cudf::column member functions (#13341) @davidwendt
• Update mypy to 1.3 (#13340) @wence-
• [Java] Purge non-empty nulls when setting validity (#13335) @razajafri
• Add row-wise filtering step to read_parquet (#13334) @rjzamora
• Performance improvement for nvtext::minhash (#13333) @davidwendt
• Fix some libcudf functions to set the null count on returning columns (#13331) @davidwendt
• Change cudf::detail::concatenate_masks to return null-count (#13330) @davidwendt
• Move meta calculation in `dask_cu...

v23.06.00

🚨 Breaking Changes

• Fix batch processing for parquet writer (#13438) @ttnghia
• Use <NA> instead of null to match pandas. (#13415) @bdice
• Remove UNKNOWN_NULL_COUNT (#13372) @vyasr
• Remove default UNKNOWN_NULL_COUNT from cudf::column member functions (#13341) @davidwendt
• Use std::overflow_error when output would exceed column size limit (#13323) @davidwendt
• Remove null mask and null count from column_view constructors (#13311) @vyasr
• Change default value of the observed= argument in groupby to True to reflect the actual behaviour (#13296) @shwina
• Throw error if UNINITIALIZED is passed to cudf::state_null_count (#13292) @davidwendt
• Remove default null-count parameter from cudf::make_strings_column factory (#13227) @davidwendt
• Remove UNKNOWN_NULL_COUNT where it can be easily computed (#13205) @vyasr
• Update minimum Python version to Python 3.9 (#13196) @shwina
• Refactor contiguous_split API into contiguous_split.hpp (#13186) @abellina
• Cleanup Parquet chunked writer (#13094) @ttnghia
• Cleanup ORC chunked writer (#13091) @ttnghia
• Raise NotImplementedError when attempting to construct cuDF objects from timezone-aware datetimes (#13086) @shwina
• Remove deprecated regex functions from libcudf (#13067) @davidwendt
• [REVIEW] Upgrade to arrow-11 (#12757) @galipremsagar
• Implement Python drop_duplicates with cudf::stable_distinct. (#11656) @brandon-b-miller

🐛 Bug Fixes

• Fix valid count computation in offset_bitmask_binop kernel (#13489) @davidwendt
• Fix writing of ORC files with empty rowgroups (#13466) @vuule
• Fix cudf::repeat logic when count is zero (#13459) @davidwendt
• Fix batch processing for parquet writer (#13438) @ttnghia
• Fix invalid use of std::exclusive_scan in Parquet writer (#13434) @etseidl
• Patch numba if it is imported first to ensure minor version compatibility works. (#13433) @bdice
• Fix cudf::strings::replace_with_backrefs hang on empty match result (#13418) @davidwendt
• Use <NA> instead of null to match pandas. (#13415) @bdice
• Fix tokenize with non-space delimiter (#13403) @shwina
• Fix groupby head/tail for empty dataframe (#13398) @shwina
• Default to closed="right" in IntervalIndex constructor (#13394) @shwina
• Correctly reorder and reindex scan groupbys with null keys (#13389) @wence-
• Fix unused argument errors in nvcc 11.5 (#13387) @abellina
• Updates needed to work with jitify that leverages libcudacxx (#13383) @robertmaynard
• Fix unused parameter warning/error in parquet/page_data.cu (#13367) @davidwendt
• Fix page size estimation in Parquet writer (#13364) @etseidl
• Fix subword_tokenize error when input contains no tokens (#13320) @davidwendt
• Support gcc 12 as the C++ compiler (#13316) @robertmaynard
• Correctly set bitmask size in from_column_view (#13315) @wence-
• Fix approach to detecting assignment for gte/lte operators (#13285) @vyasr
• Fix parquet schema interpretation issue (#13277) @hyperbolic2346
• Fix 64bit shift bug in avro reader (#13276) @karthikeyann
• Fix unused variables/parameters in parquet/writer_impl.cu (#13263) @davidwendt
• Clean up buffers in case AssertionError (#13262) @razajafri
• Allow empty input table in ast compute_column (#13245) @wence-
• Fix structs_column_wrapper constructors to copy input column wrappers (#13243) @davidwendt
• Fix the row index stream order in ORC reader (#13242) @vuule
• Make is_decompression_disabled and is_compression_disabled thread-safe (#13240) @vuule
• Add [[maybe_unused]] to nvbench environment. (#13219) @bdice
• Fix race in ORC string dictionary creation (#13214) @revans2
• Add scalar argtypes to udf cache keys (#13194) @brandon-b-miller
• Fix unused parameter warning/error in grouped_rolling.cu (#13192) @davidwendt
• Avoid skbuild 0.17.2 which affected the cmake -DPython_LIBRARY string (#13188) @sevagh
• Fix hostdevice_vector::subspan (#13187) @ttnghia
• Use custom nvbench entry point to ensure cudf::nvbench_base_fixture usage (#13183) @robertmaynard
• Fix slice_strings to return empty strings for stop < start indices (#13178) @davidwendt
• Allow compilation with any GTest version 1.11+ (#13153) @robertmaynard
• Fix a few clang-format style check errors (#13146) @davidwendt
• [REVIEW] Fix Series and DataFrame constructors to validate index lengths (#13122) @galipremsagar
• Fix hash join when the input tables have nulls on only one side (#13120) @ttnghia
• Fix GPU_ARCHS setting in Java CMake build and CMAKE_CUDA_ARCHITECTURES in Python package build. (#13117) @davidwendt
• Adds checks to make sure json reader won't overflow (#13115) @elstehle
• Fix null_count of columns returned by chunked_parquet_reader (#13111) @vuule
• Fixes sliced list and struct column bug in JSON chunked writer (#13108) @karthikeyann
• [REVIEW] Fix missing confluent kafka version (#13101) @galipremsagar
• Use make_empty_lists_column instead of make_empty_column(type_id::LIST) (#13099) @davidwendt
• Raise NotImplementedError when attempting to construct cuDF objects from timezone-aware datetimes (#13086) @shwina
• Fix column selection read_parquet benchmarks (#13082) @vuule
• Fix bugs in iterative groupby apply algorithm (#13078) @brandon-b-miller
• Add algorithm include in data_sink.hpp (#13068) @ahendriksen
• Fix tests/identify_stream_usage.cpp (#13066) @ahendriksen
• Prevent overflow with skip_rows in ORC and Parquet readers (#13063) @vuule
• Add except declaration in Cython interface for regex_program::create (#13054) @davidwendt
• [REVIEW] Fix branch version in CI scripts (#13029) @galipremsagar
• Fix OOB memory access in CSV reader when reading without NA values (#13011) @vuule
• Fix read_avro() skip_rows and num_rows. (#12912) @tpn
• Purge nonempty nulls from byte_cast list outputs. (#11971) @bdice
• Fix consumption of CPU-backed interchange protocol dataframes (#11392) @shwina

🚀 New Features

• Remove numba JIT kernel usage from dataframe copy tests (#13385) @brandon-b-miller
• Add JNI for ORC/Parquet writer compression statistics (#13376) @ttnghia
• Use _compile_or_get in JIT groupby apply (#13350) @brandon-b-miller
• cuDF numba cuda 12 updates (#13337) @brandon-b-miller
• Add tz_convert method to convert between timestamps (#13328) @shwina
• Optionally return compression statistics from ORC and Parquet writers (#13294) @vuule
• Support the case=False argument to str.contains (#13290) @shwina
• Add an event handler for ColumnVector.close (#13279) @abellina
• JNI api for cudf::chunked_pack (#13278) @abellina
• Implement a chunked_pack API (#13260) @abellina
• Update cudf recipes to use GTest version to >=1.13 (#13207) @robertmaynard
• JNI changes for range-extents in window functions. (#13199) @mythrocks
• Add support for DatetimeTZDtype and tz_localize (#13163) @shwina
• Add IS_NULL operator to AST (#13145) @karthikeyann
• STRING order-by column for RANGE window functions (#13143) @mythrocks
• Update contains_table to experimental row hasher and equality comparator (#13119) @divyegala
• Automatically select GroupBy.apply algorithm based on if the UDF is jittable (#13113) @brandon-b-miller
• Refactor Parquet chunked writer (#13076) @ttnghia
• Add Python bindings for string literal support in AST (#13073) @karthikeyann
• Add Java bindings for string literal support in AST (#13072) @karthikeyann
• Add string scalar support in AST (#13061) @karthikeyann
• Log cuIO warnings using the libcudf logger (#13043) @vuule
• Update mixed_join to use experimental row hasher and comparator (#13028) @divyegala
• Support structs of lists in row lexicographic comparator (#13005) @ttnghia
• Adding hostdevice_span that is a span createable from hostdevice_vector (#12981) @hyperbolic2346
• Add nvtext::minhash function (#12961) @davidwendt
• Support lists of structs in row lexicographic comparator (#12953) @ttnghia
• Update join to use experimental row hasher and comparator (#12787) @divyegala
• Implement Python drop_duplicates with cudf::stable_distinct. (#11656) @brandon-b-miller

🛠️ Improvements

• Drop extraneous dependencies from cudf conda recipe. (#13406) @bdice
• Handle some corner-cases in indexing with boolean masks (#13402) @wence-
• Add cudf::stable_distinct public API, tests, and benchmarks. (#13392) @bdice
• [JNI] Pass this ColumnVector to the onClosed event handler (#13386) @abellina
• Fix JNI method with mismatched parameter list (#13384) @ttnghia
• Split up experimental_row_operator_tests.cu to improve its compile time (#13382) @davidwendt
• Deprecate cudf::strings::slice_strings APIs that accept delimiters (#13373) @davidwendt
• Remove UNKNOWN_NULL_COUNT (#13372) @vyasr
• Move some nvtext benchmarks to nvbench (#13368) @davidwendt
• run docs nightly too (#13366) @AyodeAwe
• Add warning for default dtype parameter in get_dummies (#13365) @galipremsagar
• Add log messages about kvikIO compatibility mode (#13363) @vuule
• Switch back to using primary shared-action-workflows branch (#13362) @vyasr
• Deprecate StringIndex and use Index instead (#13361) @galipremsagar
• Ensure columns have valid null counts in CUDF JNI. (#13355) @mythrocks
• Expunge most uses of TypeVar(bound="Foo") (#13346) @wence-
• Remove all references to UNKNOWN_NULL_COUNT in Python (#13345) @vyasr
• Improve distinct_count with cuco::static_set (#13343) @PointKernel
• Fix contiguous_split performance (#13342) @ttnghia
• Remove default UNKNOWN_NULL_COUNT from cudf::column member functions (#13341) @davidwendt
• Update mypy to 1.3 (#13340) @wence-
• [Java] Purge non-empty nulls when setting validity (#13335) @razajafri
• Add row-wise filtering step to read_parquet (#13334) @rjzamora
• Performance improvement for nvtext::minhash (#13333) @davidwendt
• Fix some libcudf functions to set the null count on returning columns (#13331) @davidwendt
• Change cudf::detail::concatenate_masks to return null-count (#13330) @davidwendt
• Move meta calculation in dask_cudf.read_parquet (#13327) @rjzamora
• Changes to support Numpy >...

v23.04.01

🚨 Breaking Changes

• Pin dask and distributed for release (#13070) @galipremsagar
• Declare a different name for nan_equality.UNEQUAL to prevent Cython warnings. (#12947) @bdice
• Update minimum pandas and numpy pinnings (#12887) @galipremsagar
• Deprecate names & dtype in Index.copy (#12825) @galipremsagar
• Deprecate Index.is_* methods (#12820) @galipremsagar
• Deprecate datetime_is_numeric from describe (#12818) @galipremsagar
• Deprecate na_sentinel in factorize (#12817) @galipremsagar
• Make string methods return a Series with a useful Index (#12814) @shwina
• Produce useful guidance on overflow error in to_csv (#12705) @wence-
• Move strings_udf code into cuDF (#12669) @brandon-b-miller
• Remove cudf::strings::repeat_strings_output_sizes and optional parameter from cudf::strings::repeat_strings (#12609) @davidwendt
• Replace message parsing with throwing more specific exceptions (#12426) @vyasr

🐛 Bug Fixes

• Pin curand version (#13127) @vyasr
• Fix memcheck script to execute only _TEST files found in bin/gtests/libcudf (#13006) @davidwendt
• Fix DataFrame constructor to broadcast scalar inputs properly (#12997) @galipremsagar
• Drop force_nullable_schema from chunked parquet writer (#12996) @galipremsagar
• Fix gtest column utility comparator diff reporting (#12995) @davidwendt
• Handle index names while performing groupby (#12992) @galipremsagar
• Fix __setitem__ on string columns when the scalar value ends in a null byte (#12991) @wence-
• Fix sort_values when column is all empty strings (#12988) @eriknw
• Remove unused variable and fix memory issue in ORC writer (#12984) @ttnghia
• Pre-emptive fix for upstream dask.dataframe.read_parquet changes (#12983) @rjzamora
• Remove MANIFEST.in use auto-generated one for sdists and package_data for wheels (#12960) @vyasr
• Update to use rapids-export(COMPONENTS) feature. (#12959) @robertmaynard
• cudftestutil supports static gtest dependencies (#12957) @robertmaynard
• Include gtest in build environment. (#12956) @vyasr
• Correctly handle scalar indices in Index.__getitem__ (#12955) @wence-
• Avoid building cython twice (#12945) @galipremsagar
• Fix set index error for Series rolling window operations (#12942) @galipremsagar
• Fix calculation of null counts for Parquet statistics (#12938) @etseidl
• Preserve integer dtype of hive-partitioned column containing nulls (#12930) @rjzamora
• Use get_current_device_resource for intermediate allocations in COLLECT_LIST window code (#12927) @karthikeyann
• Mark dlpack tensor deleter as noexcept to match PyCapsule_Destructor signature. (#12921) @bdice
• Fix conda recipe post-link.sh typo (#12916) @pentschev
• min_rows and num_rows are swapped in ComputePageSizes declaration in Parquet reader (#12886) @etseidl
• Expect cupy to now support bool arrays for dlpack. (#12883) @vyasr
• Use python -m pytest for nightly wheel tests (#12871) @bdice
• Parquet writer column_size() should return a size_t (#12870) @etseidl
• Fix cudf::hash_partition kernel launch error with decimal128 types (#12863) @davidwendt
• Fix an issue with parquet chunked reader undercounting string lengths. (#12859) @nvdbaranec
• Remove tokenizers pre-install pinning. (#12854) @vyasr
• Fix parquet RangeIndex bug (#12838) @rjzamora
• Remove KAFKA_HOST_TEST from compute-sanitizer check (#12831) @davidwendt
• Make string methods return a Series with a useful Index (#12814) @shwina
• Tell cudf_kafka to use header-only fmt (#12796) @vyasr
• Add GroupBy.dtypes (#12783) @galipremsagar
• Fix a leak in a test and clarify some test names (#12781) @revans2
• Fix bug in all-null list due to join_list_elements special handling (#12767) @karthikeyann
• Add try/except for expected null-schema error in read_parquet (#12756) @rjzamora
• Throw an exception if an unsupported page encoding is detected in Parquet reader (#12754) @etseidl
• Fix a bug with num_keys in _scatter_by_slice (#12749) @thomcom
• Bump pinned rapids wheel deps to 23.4 (#12735) @sevagh
• Rework logic in cudf::strings::split_record to improve performance (#12729) @davidwendt
• Add always_nullable flag to Dremel encoding (#12727) @divyegala
• Fix memcheck read error in compound segmented reduce (#12722) @davidwendt
• Fix faulty conditional logic in JIT GroupBy.apply (#12706) @brandon-b-miller
• Produce useful guidance on overflow error in to_csv (#12705) @wence-
• Handle parquet list data corner case (#12698) @nvdbaranec
• Fix missing trailing comma in json writer (#12688) @karthikeyann
• Remove child fom newCudaAsyncMemoryResource (#12681) @abellina
• Handle bool types in round API (#12670) @galipremsagar
• Ensure all of device bitmask is initialized in from_arrow (#12668) @wence-
• Fix from_arrow to load a sliced arrow table (#12665) @galipremsagar
• Fix dask-cudf read_parquet bug for multi-file aggregation (#12663) @rjzamora
• Fix AllocateLikeTest gtests reading uninitialized null-mask (#12643) @davidwendt
• Fix find_common_dtype and values to handle complex dtypes (#12537) @galipremsagar
• Fix fetching of MultiIndex values when a label is passed (#12521) @galipremsagar
• Fix Series comparison vs scalars (#12519) @brandon-b-miller
• Allow casting from UDFString back to StringView to call methods in strings_udf (#12363) @brandon-b-miller

📖 Documentation

• Fix GroupBy.apply doc examples rendering (#12994) @brandon-b-miller
• add sphinx building and s3 uploading for dask-cudf docs (#12982) @quasiben
• Add developer documentation forbidding default parameters in detail APIs (#12978) @vyasr
• Add README symlink for dask-cudf. (#12946) @bdice
• Remove return type from @return doxygen tags (#12908) @davidwendt
• Fix docs build to be pydata-sphinx-theme=0.13.0 compatible (#12874) @galipremsagar
• Add skeleton API and prose documentation for dask-cudf (#12725) @wence-
• Enable doctests for GroupBy methods (#12658) @brandon-b-miller
• Add comment about CUB patch for SegmentedSortInt.Bool gtest (#12611) @davidwendt

🚀 New Features

• Add JNI method for strings::replace multi variety (#12979) @NVnavkumar
• Add nunique aggregation support for cudf::segmented_reduce (#12972) @davidwendt
• Refactor orc chunked writer (#12949) @ttnghia
• Make Parquet writer nullable option application to single table writes (#12933) @vuule
• Refactor io::orc::ProtobufWriter (#12877) @ttnghia
• Make timezone table independent from ORC (#12805) @vuule
• Cache JIT GroupBy.apply functions (#12802) @brandon-b-miller
• Implement initial support for avro logical types (#6482) (#12788) @tpn
• Update tests/column_utilities to use experimental::equality row comparator (#12777) @divyegala
• Update distinct/unique_count to experimental::row hasher/comparator (#12776) @divyegala
• Update hash_partition to use experimental::row::row_hasher (#12761) @divyegala
• Update is_sorted to use experimental::row::lexicographic (#12752) @divyegala
• Update default data source in cuio reader benchmarks (#12740) @PointKernel
• Reenable stream identification library in CI (#12714) @vyasr
• Add regex_program strings splitting java APIs and tests (#12713) @cindyyuanjiang
• Add regex_program strings replacing java APIs and tests (#12701) @cindyyuanjiang
• Add regex_program strings extract java APIs and tests (#12699) @cindyyuanjiang
• Variable fragment sizes for Parquet writer (#12685) @etseidl
• Add segmented reduction support for fixed-point types (#12680) @davidwendt
• Move strings_udf code into cuDF (#12669) @brandon-b-miller
• Add regex_program searching APIs and related java classes (#12666) @cindyyuanjiang
• Add logging to libcudf (#12637) @vuule
• Add compound aggregations to cudf::segmented_reduce (#12573) @davidwendt
• Convert rank to use to experimental row comparators (#12481) @divyegala
• Use rapids-cmake parallel testing feature (#12451) @robertmaynard
• Enable detection of undesired stream usage (#12089) @vyasr

🛠️ Improvements

• Pin dask and distributed for release (#13070) @galipremsagar
• Pin cupy in wheel tests to supported versions (#13041) @vyasr
• Pin numba version (#13001) @vyasr
• Rework gtests SequenceTest to remove using namepace cudf (#12985) @davidwendt
• Stop setting package version attribute in wheels (#12977) @vyasr
• Move detail reduction functions to cudf::reduction::detail namespace (#12971) @davidwendt
• Remove default detail mrs: part7 (#12970) @vyasr
• Remove default detail mrs: part6 (#12969) @vyasr
• Remove default detail mrs: part5 (#12968) @vyasr
• Remove default detail mrs: part4 (#12967) @vyasr
• Remove default detail mrs: part3 (#12966) @vyasr
• Remove default detail mrs: part2 (#12965) @vyasr
• Remove default detail mrs: part1 (#12964) @vyasr
• Add force_nullable_schema parameter to Parquet writer. (#12952) @galipremsagar
• Declare a different name for nan_equality.UNEQUAL to prevent Cython warnings. (#12947) @bdice
• Remove remaining default stream parameters (#12943) @vyasr
• Fix cudf::segmented_reduce gtest for ANY aggregation (#12940) @davidwendt
• Implement groupby.head and groupby.tail (#12939) @wence-
• Fix libcudf gtests to pass null-count=0 for empty validity masks (#12923) @davidwendt
• Migrate parquet encoding to use experimental row operators (#12918) @PointKernel
• Fix benchmarks coded in namespace cudf and using namespace cudf (#12915) @karthikeyann
• Fix io/text gtests coded in namespace cudf::test (#12914) @karthikeyann
• Pass SCCACHE_S3_USE_SSL to conda builds (#12910) @ajschmidt8
• Fix FST, JSON gtests & benchmarks coded in namespace cudf::test (#12907) @karthikeyann
• Generate pyproject dependencies using dfg (#12906) @vyasr
• Update libcudf counting functions to specify cudf::size_type (#12904) @davidwendt
• Fix moto env vars & pass AWS_SESSION_TOKEN to conda builds (#12902) @ajschmidt8
• Rewrite CSV wri...

v23.04.00

🚨 Breaking Changes

• Pin dask and distributed for release (#13070) @galipremsagar
• Declare a different name for nan_equality.UNEQUAL to prevent Cython warnings. (#12947) @bdice
• Update minimum pandas and numpy pinnings (#12887) @galipremsagar
• Deprecate names & dtype in Index.copy (#12825) @galipremsagar
• Deprecate Index.is_* methods (#12820) @galipremsagar
• Deprecate datetime_is_numeric from describe (#12818) @galipremsagar
• Deprecate na_sentinel in factorize (#12817) @galipremsagar
• Make string methods return a Series with a useful Index (#12814) @shwina
• Produce useful guidance on overflow error in to_csv (#12705) @wence-
• Move strings_udf code into cuDF (#12669) @brandon-b-miller
• Remove cudf::strings::repeat_strings_output_sizes and optional parameter from cudf::strings::repeat_strings (#12609) @davidwendt
• Replace message parsing with throwing more specific exceptions (#12426) @vyasr

🐛 Bug Fixes

• Fix memcheck script to execute only _TEST files found in bin/gtests/libcudf (#13006) @davidwendt
• Fix DataFrame constructor to broadcast scalar inputs properly (#12997) @galipremsagar
• Drop force_nullable_schema from chunked parquet writer (#12996) @galipremsagar
• Fix gtest column utility comparator diff reporting (#12995) @davidwendt
• Handle index names while performing groupby (#12992) @galipremsagar
• Fix __setitem__ on string columns when the scalar value ends in a null byte (#12991) @wence-
• Fix sort_values when column is all empty strings (#12988) @eriknw
• Remove unused variable and fix memory issue in ORC writer (#12984) @ttnghia
• Pre-emptive fix for upstream dask.dataframe.read_parquet changes (#12983) @rjzamora
• Remove MANIFEST.in use auto-generated one for sdists and package_data for wheels (#12960) @vyasr
• Update to use rapids-export(COMPONENTS) feature. (#12959) @robertmaynard
• cudftestutil supports static gtest dependencies (#12957) @robertmaynard
• Include gtest in build environment. (#12956) @vyasr
• Correctly handle scalar indices in Index.__getitem__ (#12955) @wence-
• Avoid building cython twice (#12945) @galipremsagar
• Fix set index error for Series rolling window operations (#12942) @galipremsagar
• Fix calculation of null counts for Parquet statistics (#12938) @etseidl
• Preserve integer dtype of hive-partitioned column containing nulls (#12930) @rjzamora
• Use get_current_device_resource for intermediate allocations in COLLECT_LIST window code (#12927) @karthikeyann
• Mark dlpack tensor deleter as noexcept to match PyCapsule_Destructor signature. (#12921) @bdice
• Fix conda recipe post-link.sh typo (#12916) @pentschev
• min_rows and num_rows are swapped in ComputePageSizes declaration in Parquet reader (#12886) @etseidl
• Expect cupy to now support bool arrays for dlpack. (#12883) @vyasr
• Use python -m pytest for nightly wheel tests (#12871) @bdice
• Parquet writer column_size() should return a size_t (#12870) @etseidl
• Fix cudf::hash_partition kernel launch error with decimal128 types (#12863) @davidwendt
• Fix an issue with parquet chunked reader undercounting string lengths. (#12859) @nvdbaranec
• Remove tokenizers pre-install pinning. (#12854) @vyasr
• Fix parquet RangeIndex bug (#12838) @rjzamora
• Remove KAFKA_HOST_TEST from compute-sanitizer check (#12831) @davidwendt
• Make string methods return a Series with a useful Index (#12814) @shwina
• Tell cudf_kafka to use header-only fmt (#12796) @vyasr
• Add GroupBy.dtypes (#12783) @galipremsagar
• Fix a leak in a test and clarify some test names (#12781) @revans2
• Fix bug in all-null list due to join_list_elements special handling (#12767) @karthikeyann
• Add try/except for expected null-schema error in read_parquet (#12756) @rjzamora
• Throw an exception if an unsupported page encoding is detected in Parquet reader (#12754) @etseidl
• Fix a bug with num_keys in _scatter_by_slice (#12749) @thomcom
• Bump pinned rapids wheel deps to 23.4 (#12735) @sevagh
• Rework logic in cudf::strings::split_record to improve performance (#12729) @davidwendt
• Add always_nullable flag to Dremel encoding (#12727) @divyegala
• Fix memcheck read error in compound segmented reduce (#12722) @davidwendt
• Fix faulty conditional logic in JIT GroupBy.apply (#12706) @brandon-b-miller
• Produce useful guidance on overflow error in to_csv (#12705) @wence-
• Handle parquet list data corner case (#12698) @nvdbaranec
• Fix missing trailing comma in json writer (#12688) @karthikeyann
• Remove child fom newCudaAsyncMemoryResource (#12681) @abellina
• Handle bool types in round API (#12670) @galipremsagar
• Ensure all of device bitmask is initialized in from_arrow (#12668) @wence-
• Fix from_arrow to load a sliced arrow table (#12665) @galipremsagar
• Fix dask-cudf read_parquet bug for multi-file aggregation (#12663) @rjzamora
• Fix AllocateLikeTest gtests reading uninitialized null-mask (#12643) @davidwendt
• Fix find_common_dtype and values to handle complex dtypes (#12537) @galipremsagar
• Fix fetching of MultiIndex values when a label is passed (#12521) @galipremsagar
• Fix Series comparison vs scalars (#12519) @brandon-b-miller
• Allow casting from UDFString back to StringView to call methods in strings_udf (#12363) @brandon-b-miller

📖 Documentation

• Fix GroupBy.apply doc examples rendering (#12994) @brandon-b-miller
• add sphinx building and s3 uploading for dask-cudf docs (#12982) @quasiben
• Add developer documentation forbidding default parameters in detail APIs (#12978) @vyasr
• Add README symlink for dask-cudf. (#12946) @bdice
• Remove return type from @return doxygen tags (#12908) @davidwendt
• Fix docs build to be pydata-sphinx-theme=0.13.0 compatible (#12874) @galipremsagar
• Add skeleton API and prose documentation for dask-cudf (#12725) @wence-
• Enable doctests for GroupBy methods (#12658) @brandon-b-miller
• Add comment about CUB patch for SegmentedSortInt.Bool gtest (#12611) @davidwendt

🚀 New Features

• Add JNI method for strings::replace multi variety (#12979) @NVnavkumar
• Add nunique aggregation support for cudf::segmented_reduce (#12972) @davidwendt
• Refactor orc chunked writer (#12949) @ttnghia
• Make Parquet writer nullable option application to single table writes (#12933) @vuule
• Refactor io::orc::ProtobufWriter (#12877) @ttnghia
• Make timezone table independent from ORC (#12805) @vuule
• Cache JIT GroupBy.apply functions (#12802) @brandon-b-miller
• Implement initial support for avro logical types (#6482) (#12788) @tpn
• Update tests/column_utilities to use experimental::equality row comparator (#12777) @divyegala
• Update distinct/unique_count to experimental::row hasher/comparator (#12776) @divyegala
• Update hash_partition to use experimental::row::row_hasher (#12761) @divyegala
• Update is_sorted to use experimental::row::lexicographic (#12752) @divyegala
• Update default data source in cuio reader benchmarks (#12740) @PointKernel
• Reenable stream identification library in CI (#12714) @vyasr
• Add regex_program strings splitting java APIs and tests (#12713) @cindyyuanjiang
• Add regex_program strings replacing java APIs and tests (#12701) @cindyyuanjiang
• Add regex_program strings extract java APIs and tests (#12699) @cindyyuanjiang
• Variable fragment sizes for Parquet writer (#12685) @etseidl
• Add segmented reduction support for fixed-point types (#12680) @davidwendt
• Move strings_udf code into cuDF (#12669) @brandon-b-miller
• Add regex_program searching APIs and related java classes (#12666) @cindyyuanjiang
• Add logging to libcudf (#12637) @vuule
• Add compound aggregations to cudf::segmented_reduce (#12573) @davidwendt
• Convert rank to use to experimental row comparators (#12481) @divyegala
• Use rapids-cmake parallel testing feature (#12451) @robertmaynard
• Enable detection of undesired stream usage (#12089) @vyasr

🛠️ Improvements

• Pin dask and distributed for release (#13070) @galipremsagar
• Pin cupy in wheel tests to supported versions (#13041) @vyasr
• Pin numba version (#13001) @vyasr
• Rework gtests SequenceTest to remove using namepace cudf (#12985) @davidwendt
• Stop setting package version attribute in wheels (#12977) @vyasr
• Move detail reduction functions to cudf::reduction::detail namespace (#12971) @davidwendt
• Remove default detail mrs: part7 (#12970) @vyasr
• Remove default detail mrs: part6 (#12969) @vyasr
• Remove default detail mrs: part5 (#12968) @vyasr
• Remove default detail mrs: part4 (#12967) @vyasr
• Remove default detail mrs: part3 (#12966) @vyasr
• Remove default detail mrs: part2 (#12965) @vyasr
• Remove default detail mrs: part1 (#12964) @vyasr
• Add force_nullable_schema parameter to Parquet writer. (#12952) @galipremsagar
• Declare a different name for nan_equality.UNEQUAL to prevent Cython warnings. (#12947) @bdice
• Remove remaining default stream parameters (#12943) @vyasr
• Fix cudf::segmented_reduce gtest for ANY aggregation (#12940) @davidwendt
• Implement groupby.head and groupby.tail (#12939) @wence-
• Fix libcudf gtests to pass null-count=0 for empty validity masks (#12923) @davidwendt
• Migrate parquet encoding to use experimental row operators (#12918) @PointKernel
• Fix benchmarks coded in namespace cudf and using namespace cudf (#12915) @karthikeyann
• Fix io/text gtests coded in namespace cudf::test (#12914) @karthikeyann
• Pass SCCACHE_S3_USE_SSL to conda builds (#12910) @ajschmidt8
• Fix FST, JSON gtests & benchmarks coded in namespace cudf::test (#12907) @karthikeyann
• Generate pyproject dependencies using dfg (#12906) @vyasr
• Update libcudf counting functions to specify cudf::size_type (#12904) @davidwendt
• Fix moto env vars & pass AWS_SESSION_TOKEN to conda builds (#12902) @ajschmidt8
• Rewrite CSV writer benchmark with nvbench (#12901) @PointKernel
• Rework some code logic to reduce iterator and comparator inlining to improve compile time (#12900) @davidwendt
• Deprecate `line_te...

[NIGHTLY] v23.06.00

🔗 Links

• Development Branch
• Compare with main branch

🚨 Breaking Changes

• Fix batch processing for parquet writer (#13438) @ttnghia
• Use <NA> instead of null to match pandas. (#13415) @bdice
• Remove UNKNOWN_NULL_COUNT (#13372) @vyasr
• Remove default UNKNOWN_NULL_COUNT from cudf::column member functions (#13341) @davidwendt
• Use std::overflow_error when output would exceed column size limit (#13323) @davidwendt
• Remove null mask and null count from column_view constructors (#13311) @vyasr
• Change default value of the observed= argument in groupby to True to reflect the actual behaviour (#13296) @shwina
• Throw error if UNINITIALIZED is passed to cudf::state_null_count (#13292) @davidwendt
• Remove default null-count parameter from cudf::make_strings_column factory (#13227) @davidwendt
• Remove UNKNOWN_NULL_COUNT where it can be easily computed (#13205) @vyasr
• Update minimum Python version to Python 3.9 (#13196) @shwina
• Refactor contiguous_split API into contiguous_split.hpp (#13186) @abellina
• Cleanup Parquet chunked writer (#13094) @ttnghia
• Cleanup ORC chunked writer (#13091) @ttnghia
• Raise NotImplementedError when attempting to construct cuDF objects from timezone-aware datetimes (#13086) @shwina
• Remove deprecated regex functions from libcudf (#13067) @davidwendt
• [REVIEW] Upgrade to arrow-11 (#12757) @galipremsagar
• Implement Python drop_duplicates with cudf::stable_distinct. (#11656) @brandon-b-miller

🐛 Bug Fixes

• Fix valid count computation in offset_bitmask_binop kernel (#13489) @davidwendt
• Fix writing of ORC files with empty rowgroups (#13466) @vuule
• Fix cudf::repeat logic when count is zero (#13459) @davidwendt
• Fix batch processing for parquet writer (#13438) @ttnghia
• Fix invalid use of std::exclusive_scan in Parquet writer (#13434) @etseidl
• Patch numba if it is imported first to ensure minor version compatibility works. (#13433) @bdice
• Fix cudf::strings::replace_with_backrefs hang on empty match result (#13418) @davidwendt
• Use <NA> instead of null to match pandas. (#13415) @bdice
• Fix tokenize with non-space delimiter (#13403) @shwina
• Fix groupby head/tail for empty dataframe (#13398) @shwina
• Default to closed="right" in IntervalIndex constructor (#13394) @shwina
• Correctly reorder and reindex scan groupbys with null keys (#13389) @wence-
• Fix unused argument errors in nvcc 11.5 (#13387) @abellina
• Updates needed to work with jitify that leverages libcudacxx (#13383) @robertmaynard
• Fix unused parameter warning/error in parquet/page_data.cu (#13367) @davidwendt
• Fix page size estimation in Parquet writer (#13364) @etseidl
• Fix subword_tokenize error when input contains no tokens (#13320) @davidwendt
• Support gcc 12 as the C++ compiler (#13316) @robertmaynard
• Correctly set bitmask size in from_column_view (#13315) @wence-
• Fix approach to detecting assignment for gte/lte operators (#13285) @vyasr
• Fix parquet schema interpretation issue (#13277) @hyperbolic2346
• Fix 64bit shift bug in avro reader (#13276) @karthikeyann
• Fix unused variables/parameters in parquet/writer_impl.cu (#13263) @davidwendt
• Clean up buffers in case AssertionError (#13262) @razajafri
• Allow empty input table in ast compute_column (#13245) @wence-
• Fix structs_column_wrapper constructors to copy input column wrappers (#13243) @davidwendt
• Fix the row index stream order in ORC reader (#13242) @vuule
• Make is_decompression_disabled and is_compression_disabled thread-safe (#13240) @vuule
• Add [[maybe_unused]] to nvbench environment. (#13219) @bdice
• Fix race in ORC string dictionary creation (#13214) @revans2
• Add scalar argtypes to udf cache keys (#13194) @brandon-b-miller
• Fix unused parameter warning/error in grouped_rolling.cu (#13192) @davidwendt
• Avoid skbuild 0.17.2 which affected the cmake -DPython_LIBRARY string (#13188) @sevagh
• Fix hostdevice_vector::subspan (#13187) @ttnghia
• Use custom nvbench entry point to ensure cudf::nvbench_base_fixture usage (#13183) @robertmaynard
• Fix slice_strings to return empty strings for stop < start indices (#13178) @davidwendt
• Allow compilation with any GTest version 1.11+ (#13153) @robertmaynard
• Fix a few clang-format style check errors (#13146) @davidwendt
• [REVIEW] Fix Series and DataFrame constructors to validate index lengths (#13122) @galipremsagar
• Fix hash join when the input tables have nulls on only one side (#13120) @ttnghia
• Fix GPU_ARCHS setting in Java CMake build and CMAKE_CUDA_ARCHITECTURES in Python package build. (#13117) @davidwendt
• Adds checks to make sure json reader won't overflow (#13115) @elstehle
• Fix null_count of columns returned by chunked_parquet_reader (#13111) @vuule
• Fixes sliced list and struct column bug in JSON chunked writer (#13108) @karthikeyann
• [REVIEW] Fix missing confluent kafka version (#13101) @galipremsagar
• Use make_empty_lists_column instead of make_empty_column(type_id::LIST) (#13099) @davidwendt
• Raise NotImplementedError when attempting to construct cuDF objects from timezone-aware datetimes (#13086) @shwina
• Fix column selection read_parquet benchmarks (#13082) @vuule
• Fix bugs in iterative groupby apply algorithm (#13078) @brandon-b-miller
• Add algorithm include in data_sink.hpp (#13068) @ahendriksen
• Fix tests/identify_stream_usage.cpp (#13066) @ahendriksen
• Prevent overflow with skip_rows in ORC and Parquet readers (#13063) @vuule
• Add except declaration in Cython interface for regex_program::create (#13054) @davidwendt
• [REVIEW] Fix branch version in CI scripts (#13029) @galipremsagar
• Fix OOB memory access in CSV reader when reading without NA values (#13011) @vuule
• Fix read_avro() skip_rows and num_rows. (#12912) @tpn
• Purge nonempty nulls from byte_cast list outputs. (#11971) @bdice
• Fix consumption of CPU-backed interchange protocol dataframes (#11392) @shwina

🚀 New Features

• Remove numba JIT kernel usage from dataframe copy tests (#13385) @brandon-b-miller
• Add JNI for ORC/Parquet writer compression statistics (#13376) @ttnghia
• Use _compile_or_get in JIT groupby apply (#13350) @brandon-b-miller
• cuDF numba cuda 12 updates (#13337) @brandon-b-miller
• Add tz_convert method to convert between timestamps (#13328) @shwina
• Optionally return compression statistics from ORC and Parquet writers (#13294) @vuule
• Support the case=False argument to str.contains (#13290) @shwina
• Add an event handler for ColumnVector.close (#13279) @abellina
• JNI api for cudf::chunked_pack (#13278) @abellina
• Implement a chunked_pack API (#13260) @abellina
• Update cudf recipes to use GTest version to >=1.13 (#13207) @robertmaynard
• JNI changes for range-extents in window functions. (#13199) @mythrocks
• Add support for DatetimeTZDtype and tz_localize (#13163) @shwina
• Add IS_NULL operator to AST (#13145) @karthikeyann
• STRING order-by column for RANGE window functions (#13143) @mythrocks
• Update contains_table to experimental row hasher and equality comparator (#13119) @divyegala
• Automatically select GroupBy.apply algorithm based on if the UDF is jittable (#13113) @brandon-b-miller
• Refactor Parquet chunked writer (#13076) @ttnghia
• Add Python bindings for string literal support in AST (#13073) @karthikeyann
• Add Java bindings for string literal support in AST (#13072) @karthikeyann
• Add string scalar support in AST (#13061) @karthikeyann
• Log cuIO warnings using the libcudf logger (#13043) @vuule
• Update mixed_join to use experimental row hasher and comparator (#13028) @divyegala
• Support structs of lists in row lexicographic comparator (#13005) @ttnghia
• Adding hostdevice_span that is a span createable from hostdevice_vector (#12981) @hyperbolic2346
• Add nvtext::minhash function (#12961) @davidwendt
• Support lists of structs in row lexicographic comparator (#12953) @ttnghia
• Update join to use experimental row hasher and comparator (#12787) @divyegala
• Implement Python drop_duplicates with cudf::stable_distinct. (#11656) @brandon-b-miller

🛠️ Improvements

• Bump typing_extensions minimum version to 4.0.0 (#13618) @shwina
• Drop extraneous dependencies from cudf conda recipe. (#13406) @bdice
• Handle some corner-cases in indexing with boolean masks (#13402) @wence-
• Add cudf::stable_distinct public API, tests, and benchmarks. (#13392) @bdice
• [JNI] Pass this ColumnVector to the onClosed event handler (#13386) @abellina
• Fix JNI method with mismatched parameter list (#13384) @ttnghia
• Split up experimental_row_operator_tests.cu to improve its compile time (#13382) @davidwendt
• Deprecate cudf::strings::slice_strings APIs that accept delimiters (#13373) @davidwendt
• Remove UNKNOWN_NULL_COUNT (#13372) @vyasr
• Move some nvtext benchmarks to nvbench (#13368) @davidwendt
• run docs nightly too (#13366) @AyodeAwe
• Add warning for default dtype parameter in get_dummies (#13365) @galipremsagar
• Add log messages about kvikIO compatibility mode (#13363) @vuule
• Switch back to using primary shared-action-workflows branch (#13362) @vyasr
• Deprecate StringIndex and use Index instead (#13361) @galipremsagar
• Ensure columns have valid null counts in CUDF JNI. (#13355) @mythrocks
• Expunge most uses of TypeVar(bound="Foo") (#13346) @wence-
• Remove all references to UNKNOWN_NULL_COUNT in Python (#13345) @vyasr
• Improve distinct_count with cuco::static_set (#13343) @PointKernel
• Fix contiguous_split performance (#13342) @ttnghia
• Remove default UNKNOWN_NULL_COUNT from cudf::column member functions (#13341) @davidwendt
• Update mypy to 1.3 (#13340) @wence-
• [Java] Purge non-empty nulls when setting validity (#13335) @razajafri
• Add row-wise filtering step to read_parquet (#13334) @rjzamora
• Performance improvement for nvtext::minhash (#13333) @davidwendt
• Fix some libcudf functions to ...

v23.02.00

🚨 Breaking Changes

• Pin dask and distributed for release (#12695) @galipremsagar
• Change ways to access ptr in Buffer (#12587) @galipremsagar
• Remove column names (#12578) @vuule
• Default cudf::io::read_json to nested JSON parser (#12544) @vuule
• Switch engine=cudf to the new JSON reader (#12509) @galipremsagar
• Add trailing comma support for nested JSON reader (#12448) @karthikeyann
• Upgrade to arrow-10.0.1 (#12327) @galipremsagar
• Fail loudly to avoid data corruption with unsupported input in read_orc (#12325) @vuule
• CSV, JSON reader to infer integer column with nulls as int64 instead of float64 (#12309) @karthikeyann
• Remove deprecated code for 23.02 (#12281) @vyasr
• Null element for parsing error in numeric types in JSON, CSV reader (#12272) @karthikeyann
• Purge non-empty nulls for superimpose_nulls and push_down_nulls (#12239) @ttnghia
• Rename cudf::structs::detail::superimpose_parent_nulls APIs (#12230) @ttnghia
• Remove JIT type names, refactor id_to_type. (#12158) @bdice
• Floor division uses integer division for integral arguments (#12131) @wence-

🐛 Bug Fixes

• Fix a mask data corruption in UDF (#12647) @galipremsagar
• pre-commit: Update isort version to 5.12.0 (#12645) @wence-
• tests: Skip cuInit tests if cuda-gdb is not found or not working (#12644) @wence-
• Revert regex program java APIs and tests (#12639) @cindyyuanjiang
• Fix leaks in ColumnVectorTest (#12625) @jlowe
• Handle when spillable buffers own each other (#12607) @madsbk
• Fix incorrect null counts for sliced columns in JCudfSerialization (#12589) @jlowe
• lists: Transfer dtypes correctly through list.get (#12586) @wence-
• timedelta: Don't go via float intermediates for floordiv (#12585) @wence-
• Fixing BUG, get_next_chunk() should use the blocking function device_read() (#12584) @madsbk
• Make JNI QuoteStyle accessible outside ai.rapids.cudf (#12572) @mythrocks
• partition_by_hash(): support index (#12554) @madsbk
• Mixed Join benchmark bug due to wrong conditional column (#12553) @divyegala
• Update List Lexicographical Comparator (#12538) @divyegala
• Dynamically read PTX version (#12534) @brandon-b-miller
• build.sh switch to use RAPIDS magic value (#12525) @robertmaynard
• Loosen runtime arrow pinning (#12522) @vyasr
• Enable metadata transfer for complex types in transpose (#12491) @galipremsagar
• Fix issues with parquet chunked reader (#12488) @nvdbaranec
• Fix missing metadata transfer in concat for ListColumn (#12487) @galipremsagar
• Rename libcudf substring source files to slice (#12484) @davidwendt
• Fix compile issue with arrow 10 (#12465) @ttnghia
• Fix List offsets bug in mixed type list column in nested JSON reader (#12447) @karthikeyann
• Fix xfail incompatibilities (#12423) @vyasr
• Fix bug in Parquet column index encoding (#12404) @etseidl
• When building Arrow shared look for a shared OpenSSL (#12396) @robertmaynard
• Fix get_json_object to return empty column on empty input (#12384) @davidwendt
• Pin arrow 9 in testing dependencies to prevent conda solve issues (#12377) @vyasr
• Fix reductions any/all return value for empty input (#12374) @davidwendt
• Fix debug compile errors in parquet.hpp (#12372) @davidwendt
• Purge non-empty nulls in cudf::make_lists_column (#12370) @ttnghia
• Use correct memory resource in io::make_column (#12364) @vyasr
• Add code to detect possible malformed page data in parquet files. (#12360) @nvdbaranec
• Fail loudly to avoid data corruption with unsupported input in read_orc (#12325) @vuule
• Fix NumericPairIteratorTest for float values (#12306) @davidwendt
• Fixes memory allocation in nested JSON tokenizer (#12300) @elstehle
• Reconstruct dtypes correctly for list aggs of struct columns (#12290) @wence-
• Fix regex \A and \Z to strictly match string begin/end (#12282) @davidwendt
• Fix compile issue in json_chunked_reader.cpp (#12280) @ttnghia
• Change reductions any/all to return valid values for empty input (#12279) @davidwendt
• Only exclude join keys that are indices from key columns (#12271) @wence-
• Fix spill to device limit (#12252) @madsbk
• Correct behaviour of sort in concat for singleton concatenations (#12247) @wence-
• Purge non-empty nulls for superimpose_nulls and push_down_nulls (#12239) @ttnghia
• Patch CUB DeviceSegmentedSort and remove workaround (#12234) @davidwendt
• Fix memory leak in udf_string::assign(&&) function (#12206) @davidwendt
• Workaround thrust-copy-if limit in json get_tree_representation (#12190) @davidwendt
• Fix page size calculation in Parquet writer (#12182) @etseidl
• Add cudf::detail::sizes_to_offsets_iterator to allow checking overflow in offsets (#12180) @davidwendt
• Workaround thrust-copy-if limit in wordpiece-tokenizer (#12168) @davidwendt
• Floor division uses integer division for integral arguments (#12131) @wence-

📖 Documentation

• Fix link to NVTX (#12598) @sameerz
• Include missing groupby functions in documentation (#12580) @quasiben
• Fix documentation author (#12527) @bdice
• Update libcudf reduction docs for casting output types (#12526) @davidwendt
• Add JSON reader page in user guide (#12499) @GregoryKimball
• Link unsupported iteration API docstrings (#12482) @galipremsagar
• strings_udf doc update (#12469) @brandon-b-miller
• Update cudf_assert docs with correct NDEBUG behavior (#12464) @robertmaynard
• Update pre-commit hooks guide (#12395) @bdice
• Update test docs to not use detail comparison utilities (#12332) @PointKernel
• Fix doxygen description for regex_program::compute_working_memory_size (#12329) @davidwendt
• Add eval to docs. (#12322) @vyasr
• Turn on xfail_strict=true (#12244) @wence-
• Update 10 minutes to cuDF (#12114) @wence-

🚀 New Features

• Use kvikIO as the default IO backend (#12574) @vuule
• Use has_nonempty_nulls instead of may_contain_non_empty_nulls in superimpose_nulls and push_down_nulls (#12560) @ttnghia
• Add strings methods removeprefix and removesuffix (#12557) @davidwendt
• Add regex_program java APIs and unit tests (#12548) @cindyyuanjiang
• Default cudf::io::read_json to nested JSON parser (#12544) @vuule
• Make string quoting optional on CSV write (#12539) @mythrocks
• Use new nvCOMP API to optimize the compression temp memory size (#12533) @vuule
• Support "values" orient (array of arrays) in Nested JSON reader (#12498) @karthikeyann
• one_hot_encode to use experimental row comparators (#12478) @divyegala
• Support %W and %w format specifiers in cudf::strings::to_timestamps (#12475) @davidwendt
• Add JSON Writer (#12474) @karthikeyann
• Refactor thrust_copy_if into cudf::detail::copy_if_safe (#12455) @ttnghia
• Add trailing comma support for nested JSON reader (#12448) @karthikeyann
• Extract tokenize_json.hpp detail header from src/io/json/nested_json.hpp (#12432) @ttnghia
• JNI bindings to write CSV (#12425) @mythrocks
• Nested JSON depth benchmark (#12371) @karthikeyann
• Implement lists::reverse (#12336) @ttnghia
• Use device_read in experimental read_json (#12314) @vuule
• Implement JNI for strings::reverse (#12283) @ttnghia
• Null element for parsing error in numeric types in JSON, CSV reader (#12272) @karthikeyann
• Add cudf::strings:like function with multiple patterns (#12269) @davidwendt
• Add environment variable to control host memory allocation in hostdevice_vector (#12251) @vuule
• Add cudf::strings::reverse function (#12227) @davidwendt
• Selectively use dictionary encoding in Parquet writer (#12211) @etseidl
• Support replace in strings_udf (#12207) @brandon-b-miller
• Add support to read binary encoded decimals in parquet (#12205) @PointKernel
• Support regex EOL where the string ends with a new-line character (#12181) @davidwendt
• Updating stream_compaction/unique to use new row comparators (#12159) @divyegala
• Add device buffer datasource (#12024) @PointKernel
• Implement groupby apply with JIT (#11452) @bwyogatama

🛠️ Improvements

• Update shared workflow branches (#12696) @ajschmidt8
• Pin dask and distributed for release (#12695) @galipremsagar
• Don't upload libcudf-example to Anaconda.org (#12671) @ajschmidt8
• Pin wheel dependencies to same RAPIDS release (#12659) @sevagh
• Use CTK 118/cp310 branch of wheel workflows (#12602) @sevagh
• Change ways to access ptr in Buffer (#12587) @galipremsagar
• Version a parquet writer xfail (#12579) @galipremsagar
• Remove column names (#12578) @vuule
• Parquet reader optimization to address V100 regression. (#12577) @nvdbaranec
• Add support for category dtypes in CSV reader (#12571) @galipremsagar
• Remove spill_lock parameter from SpillableBuffer.get_ptr() (#12564) @madsbk
• Optimize cudf::make_lists_column (#12547) @ttnghia
• Remove cudf::strings::repeat_strings_output_sizes from Java and JNI (#12546) @ttnghia
• Test that cuInit is not called when RAPIDS_NO_INITIALIZE is set (#12545) @wence-
• Rework repeat_strings to use sizes-to-offsets utility (#12543) @davidwendt
• Replace exclusive_scan with sizes_to_offsets in cudf::lists::sequences (#12541) @davidwendt
• Rework nvtext::ngrams_tokenize to use sizes-to-offsets utility (#12540) @davidwendt
• Fix binary-ops gtests coded in namespace cudf::test (#12536) @davidwendt
• More @acquire_spill_lock() and as_buffer(..., exposed=False) (#12535) @madsbk
• Guard CUDA runtime APIs with error checking (#12531) @PointKernel
• Update TODOs from issue 10432. (#12528) @bdice
• Update rapids-cmake definitions version in GitHub Actions style checks. (#12511) @bdice
• Switch engine=cudf to the new JSON reader (#12509) @galipremsagar
• Fix SUM/MEAN aggregation type support. (#12503) @bdice
• Stop using pandas._testing (#12492) @vyasr
• Fix ROLLING_TEST gtests coded in namespace cudf::test (#12490) @davidwendt
• Fix erroneously skipped ORC ZSTD test (#12486) @vuule
• Rework nvtext::generate_character_ngrams to use make_strings_children (#12480) @davidwendt
• Raise warnings as errors in the test suite (#12468) @v...

v22.12.01

🚨 Breaking Changes

• Add JNI for substring without 'end' parameter. (#12113) @firestarman
• Refactor purge_nonempty_nulls (#12111) @ttnghia
• Create an int8 column in read_csv when all elements are missing (#12110) @vuule
• Throw an error when libcudf is built without cuFile and LIBCUDF_CUFILE_POLICY is set to "ALWAYS" (#12080) @vuule
• Fix type promotion edge cases in numerical binops (#12074) @wence-
• Reduce/Remove reliance on **kwargs and *args in IO readers & writers (#12025) @galipremsagar
• Rollback of DeviceBufferLike (#12009) @madsbk
• Remove unused managed_allocator (#12005) @vyasr
• Pass column names to write_csv instead of table_metadata pointer (#11972) @vuule
• Accept const refs instead of const unique_ptr refs in reduce and scan APIs. (#11960) @vyasr
• Default to equal NaNs in make_merge_sets_aggregation. (#11952) @bdice
• Remove validation that requires introspection (#11938) @vyasr
• Trim quotes for non-string values in nested json parsing (#11898) @karthikeyann
• Add tests ensuring that cudf's default stream is always used (#11875) @vyasr
• Support nested types as groupby keys in libcudf (#11792) @PointKernel
• Default to equal NaNs in make_collect_set_aggregation. (#11621) @bdice
• Removing int8 column option from parquet byte_array writing (#11539) @hyperbolic2346
• part1: Simplify BaseIndex to an abstract class (#10389) @skirui-source

🐛 Bug Fixes

• strings_udf: use libcudf caching of character tables (#12343) @wence-
• Fix include line for IO Cython modules (#12250) @vyasr
• Make dask pinning looser (#12231) @vyasr
• Workaround for CUB segmented-sort bug with boolean keys (#12217) @davidwendt
• Fix from_dict backend dispatch to match upstream dask (#12203) @galipremsagar
• Merge branch-22.10 into branch-22.12 (#12198) @davidwendt
• Fix compression in ORC writer (#12194) @vuule
• Don't use CMake 3.25.0 as it has a show stopping FindCUDAToolkit bug (#12188) @robertmaynard
• Fix data corruption when reading ORC files with empty stripes (#12160) @vuule
• Fix decimal binary operations (#12142) @galipremsagar
• Ensure dlpack include is provided to cudf interop lib (#12139) @robertmaynard
• Safely allocate udf_string pointers in strings_udf (#12138) @brandon-b-miller
• Fix/disable jitify lto (#12122) @robertmaynard
• Fix conditional_full_join benchmark (#12121) @GregoryKimball
• Fix regex working-memory-size refactor error (#12119) @davidwendt
• Add in negative size checks for columns (#12118) @revans2
• Add JNI for substring without 'end' parameter. (#12113) @firestarman
• Fix reading of CSV files with blank second row (#12098) @vuule
• Fix an error in IO with GzipFile type (#12085) @galipremsagar
• Workaround groupby aggregate thrust::copy_if overflow (#12079) @davidwendt
• Fix alignment of compressed blocks in ORC writer (#12077) @vuule
• Fix singleton-range __setitem__ edge case (#12075) @wence-
• Fix type promotion edge cases in numerical binops (#12074) @wence-
• Force using old fmt in nvbench. (#12067) @vyasr
• Fixes List offset bug in Nested JSON reader (#12060) @karthikeyann
• Allow falling back to shim_60.ptx by default in strings_udf (#12056) @brandon-b-miller
• Force black exclusions for pre-commit. (#12036) @bdice
• Add memory_usage & items implementation for Struct column & dtype (#12033) @galipremsagar
• Reduce/Remove reliance on **kwargs and *args in IO readers & writers (#12025) @galipremsagar
• Fixes bug in csv_reader_options construction in cython (#12021) @karthikeyann
• Fix issues when both usecols and names options are used in read_csv (#12018) @vuule
• Port thrust's pinned_allocator to cudf, since Thrust 1.17 removes the type (#12004) @robertmaynard
• Revert "Replace most of preprocessor usage in nvcomp adapter with constexpr" (#11999) @vuule
• Fix bug where df.loc resulting in single row could give wrong index (#11998) @eriknw
• Switch to DISABLE_DEPRECATION_WARNINGS to match other RAPIDS projects (#11989) @robertmaynard
• Fix maximum page size estimate in Parquet writer (#11962) @vuule
• Fix local offset handling in bgzip reader (#11918) @upsj
• Fix an issue reading struct-of-list types in Parquet. (#11910) @nvdbaranec
• Fix memcheck error in TypeInference.Timestamp gtest (#11905) @davidwendt
• Fix type casting in Series.setitem (#11904) @wence-
• Fix memcheck error in get_dremel_data (#11903) @davidwendt
• Fixes Unsupported column type error due to empty list columns in Nested JSON reader (#11897) @karthikeyann
• Fix segmented-sort to ignore indices outside the offsets (#11888) @davidwendt
• Fix cudf::stable_sorted_order for NaN and -NaN in FLOAT64 columns (#11874) @davidwendt
• Fix writing of Parquet files with many fragments (#11869) @etseidl
• Fix RangeIndex unary operators. (#11868) @vyasr
• JNI Avoid NPE for reading host binary data (#11865) @revans2
• Fix decimal benchmark input data generation (#11863) @karthikeyann
• Fix pre-commit copyright check (#11860) @galipremsagar
• Fix Parquet support for seconds and milliseconds duration types (#11854) @vuule
• Ensure better compiler cache results between cudf cal-ver branches (#11835) @robertmaynard
• Fix make_column_from_scalar for all-null strings column (#11807) @davidwendt
• Tell jitify_preprocess where to search for libnvrtc (#11787) @robertmaynard
• add V2 page header support to parquet reader (#11778) @etseidl
• Parquet reader: bug fix for a num_rows/skip_rows corner case, w/optimization for nested preprocessing (#11752) @nvdbaranec
• Determine if Arrow has S3 support at runtime in unit test. (#11560) @bdice

📖 Documentation

• Use rapidsai CODE_OF_CONDUCT.md (#12166) @bdice
• Add symlinks to notebooks. (#12128) @bdice
• Add truncate API to python doc pages (#12109) @galipremsagar
• Update Numba docs links. (#12107) @bdice
• Remove "Multi-GPU with Dask-cuDF" notebook. (#12095) @bdice
• Fix link to c++ developer guide from CONTRIBUTING.md (#12084) @brandon-b-miller
• Add pivot_table and crosstab to docs. (#12014) @bdice
• Fix doxygen text for cudf::dictionary::encode (#11991) @davidwendt
• Replace default_stream_value with get_default_stream in docs. (#11985) @vyasr
• Add dtype docs pages and docstrings for cudf specific dtypes (#11974) @galipremsagar
• Update Unit Testing in libcudf guidelines to code tests outside the cudf::test namespace (#11959) @davidwendt
• Rename libcudf++ to libcudf. (#11953) @bdice
• Fix documentation referring to removed as_gpu_matrix method. (#11937) @bdice
• Remove "experimental" warning for struct columns in ORC reader and writer (#11880) @vuule
• Initial draft of policies and guidelines for libcudf usage. (#11853) @vyasr
• Add clear indication of non-GPU accelerated parameters in read_json docstring (#11825) @GregoryKimball
• Add developer docs for writing tests (#11199) @vyasr

🚀 New Features

• Adds an EventHandler to Java MemoryBuffer to be invoked on close (#12125) @abellina
• Support + in strings_udf (#12117) @brandon-b-miller
• Support upper and lower in strings_udf (#12099) @brandon-b-miller
• Add wheel builds (#12096) @vyasr
• Allow setting malloc heap size in string udfs (#12094) @brandon-b-miller
• Support strip, lstrip, and rstrip in strings_udf (#12091) @brandon-b-miller
• Mark nvcomp zstd compression stable (#12059) @jbrennan333
• Add debug-only onAllocated/onDeallocated to RmmEventHandler (#12054) @abellina
• Enable building against the libarrow contained in pyarrow (#12034) @vyasr
• Add strings like jni and native method (#12032) @cindyyuanjiang
• Cleanup common parsing code in JSON, CSV reader (#12022) @karthikeyann
• byte_range support for JSON Lines format (#12017) @karthikeyann
• Minor cleanup of root CMakeLists.txt for better organization (#11988) @robertmaynard
• Add inplace arithmetic operators to MaskedType (#11987) @brandon-b-miller
• Implement JNI for chunked Parquet reader (#11961) @ttnghia
• Add method argument to DataFrame.quantile (#11957) @rjzamora
• Add gpu memory watermark apis to JNI (#11950) @abellina
• Adds retryCount to RmmEventHandler.onAllocFailure (#11940) @abellina
• Enable returning string data from UDFs used through apply (#11933) @brandon-b-miller
• Switch over to rapids-cmake patches for thrust (#11921) @robertmaynard
• Add strings udf C++ classes and functions for phase II (#11912) @davidwendt
• Trim quotes for non-string values in nested json parsing (#11898) @karthikeyann
• Enable CEC for strings_udf (#11884) @brandon-b-miller
• ArrowIPCTableWriter writes en empty batch in the case of an empty table. (#11883) @firestarman
• Implement chunked Parquet reader (#11867) @ttnghia
• Add read_orc_metadata to libcudf (#11815) @vuule
• Support nested types as groupby keys in libcudf (#11792) @PointKernel
• Adding feature Truncate to DataFrame and Series (#11435) @VamsiTallam95

🛠️ Improvements

• Reduce number of tests marked spilling (#12197) @madsbk
• Pin dask and distributed for release (#12165) @galipremsagar
• Don't rely on GNU find in headers_test.sh (#12164) @wence-
• Update cp.clip call (#12148) @quasiben
• Enable automatic column projection in groupby().agg (#12124) @rjzamora
• Refactor purge_nonempty_nulls (#12111) @ttnghia
• Create an int8 column in read_csv when all elements are missing (#12110) @vuule
• Spilling to host memory (#12106) @madsbk
• First pass of pd.read_orc changes in tests (#12103) @galipremsagar
• Expose engine argument in dask_cudf.read_json (#12101) @rjzamora
• Remove CUDA 10 compatibility code. (#12088) @bdice
• Move and update dask nigthly install in CI (#12082) @galipremsagar
• Throw an error when libcudf is built without cuFile and LIBCUDF_CUFILE_POLICY is set to "ALWAYS" (#12080) @vuule
• Remove macros that inspect the contents of exceptions (#12076) @vyasr
• Fix ingest_raw_data performance issue in Nested JSON reader due to RVO (#12070) @karthikeyann
• Remove overflow err...

v22.12.00

🚨 Breaking Changes

• Add JNI for substring without 'end' parameter. (#12113) @firestarman
• Refactor purge_nonempty_nulls (#12111) @ttnghia
• Create an int8 column in read_csv when all elements are missing (#12110) @vuule
• Throw an error when libcudf is built without cuFile and LIBCUDF_CUFILE_POLICY is set to "ALWAYS" (#12080) @vuule
• Fix type promotion edge cases in numerical binops (#12074) @wence-
• Reduce/Remove reliance on **kwargs and *args in IO readers & writers (#12025) @galipremsagar
• Rollback of DeviceBufferLike (#12009) @madsbk
• Remove unused managed_allocator (#12005) @vyasr
• Pass column names to write_csv instead of table_metadata pointer (#11972) @vuule
• Accept const refs instead of const unique_ptr refs in reduce and scan APIs. (#11960) @vyasr
• Default to equal NaNs in make_merge_sets_aggregation. (#11952) @bdice
• Remove validation that requires introspection (#11938) @vyasr
• Trim quotes for non-string values in nested json parsing (#11898) @karthikeyann
• Add tests ensuring that cudf's default stream is always used (#11875) @vyasr
• Support nested types as groupby keys in libcudf (#11792) @PointKernel
• Default to equal NaNs in make_collect_set_aggregation. (#11621) @bdice
• Removing int8 column option from parquet byte_array writing (#11539) @hyperbolic2346
• part1: Simplify BaseIndex to an abstract class (#10389) @skirui-source

🐛 Bug Fixes

• Fix include line for IO Cython modules (#12250) @vyasr
• Make dask pinning looser (#12231) @vyasr
• Workaround for CUB segmented-sort bug with boolean keys (#12217) @davidwendt
• Fix from_dict backend dispatch to match upstream dask (#12203) @galipremsagar
• Merge branch-22.10 into branch-22.12 (#12198) @davidwendt
• Fix compression in ORC writer (#12194) @vuule
• Don't use CMake 3.25.0 as it has a show stopping FindCUDAToolkit bug (#12188) @robertmaynard
• Fix data corruption when reading ORC files with empty stripes (#12160) @vuule
• Fix decimal binary operations (#12142) @galipremsagar
• Ensure dlpack include is provided to cudf interop lib (#12139) @robertmaynard
• Safely allocate udf_string pointers in strings_udf (#12138) @brandon-b-miller
• Fix/disable jitify lto (#12122) @robertmaynard
• Fix conditional_full_join benchmark (#12121) @GregoryKimball
• Fix regex working-memory-size refactor error (#12119) @davidwendt
• Add in negative size checks for columns (#12118) @revans2
• Add JNI for substring without 'end' parameter. (#12113) @firestarman
• Fix reading of CSV files with blank second row (#12098) @vuule
• Fix an error in IO with GzipFile type (#12085) @galipremsagar
• Workaround groupby aggregate thrust::copy_if overflow (#12079) @davidwendt
• Fix alignment of compressed blocks in ORC writer (#12077) @vuule
• Fix singleton-range __setitem__ edge case (#12075) @wence-
• Fix type promotion edge cases in numerical binops (#12074) @wence-
• Force using old fmt in nvbench. (#12067) @vyasr
• Fixes List offset bug in Nested JSON reader (#12060) @karthikeyann
• Allow falling back to shim_60.ptx by default in strings_udf (#12056) @brandon-b-miller
• Force black exclusions for pre-commit. (#12036) @bdice
• Add memory_usage & items implementation for Struct column & dtype (#12033) @galipremsagar
• Reduce/Remove reliance on **kwargs and *args in IO readers & writers (#12025) @galipremsagar
• Fixes bug in csv_reader_options construction in cython (#12021) @karthikeyann
• Fix issues when both usecols and names options are used in read_csv (#12018) @vuule
• Port thrust's pinned_allocator to cudf, since Thrust 1.17 removes the type (#12004) @robertmaynard
• Revert "Replace most of preprocessor usage in nvcomp adapter with constexpr" (#11999) @vuule
• Fix bug where df.loc resulting in single row could give wrong index (#11998) @eriknw
• Switch to DISABLE_DEPRECATION_WARNINGS to match other RAPIDS projects (#11989) @robertmaynard
• Fix maximum page size estimate in Parquet writer (#11962) @vuule
• Fix local offset handling in bgzip reader (#11918) @upsj
• Fix an issue reading struct-of-list types in Parquet. (#11910) @nvdbaranec
• Fix memcheck error in TypeInference.Timestamp gtest (#11905) @davidwendt
• Fix type casting in Series.setitem (#11904) @wence-
• Fix memcheck error in get_dremel_data (#11903) @davidwendt
• Fixes Unsupported column type error due to empty list columns in Nested JSON reader (#11897) @karthikeyann
• Fix segmented-sort to ignore indices outside the offsets (#11888) @davidwendt
• Fix cudf::stable_sorted_order for NaN and -NaN in FLOAT64 columns (#11874) @davidwendt
• Fix writing of Parquet files with many fragments (#11869) @etseidl
• Fix RangeIndex unary operators. (#11868) @vyasr
• JNI Avoid NPE for reading host binary data (#11865) @revans2
• Fix decimal benchmark input data generation (#11863) @karthikeyann
• Fix pre-commit copyright check (#11860) @galipremsagar
• Fix Parquet support for seconds and milliseconds duration types (#11854) @vuule
• Ensure better compiler cache results between cudf cal-ver branches (#11835) @robertmaynard
• Fix make_column_from_scalar for all-null strings column (#11807) @davidwendt
• Tell jitify_preprocess where to search for libnvrtc (#11787) @robertmaynard
• add V2 page header support to parquet reader (#11778) @etseidl
• Parquet reader: bug fix for a num_rows/skip_rows corner case, w/optimization for nested preprocessing (#11752) @nvdbaranec
• Determine if Arrow has S3 support at runtime in unit test. (#11560) @bdice

📖 Documentation

• Use rapidsai CODE_OF_CONDUCT.md (#12166) @bdice
• Add symlinks to notebooks. (#12128) @bdice
• Add truncate API to python doc pages (#12109) @galipremsagar
• Update Numba docs links. (#12107) @bdice
• Remove "Multi-GPU with Dask-cuDF" notebook. (#12095) @bdice
• Fix link to c++ developer guide from CONTRIBUTING.md (#12084) @brandon-b-miller
• Add pivot_table and crosstab to docs. (#12014) @bdice
• Fix doxygen text for cudf::dictionary::encode (#11991) @davidwendt
• Replace default_stream_value with get_default_stream in docs. (#11985) @vyasr
• Add dtype docs pages and docstrings for cudf specific dtypes (#11974) @galipremsagar
• Update Unit Testing in libcudf guidelines to code tests outside the cudf::test namespace (#11959) @davidwendt
• Rename libcudf++ to libcudf. (#11953) @bdice
• Fix documentation referring to removed as_gpu_matrix method. (#11937) @bdice
• Remove "experimental" warning for struct columns in ORC reader and writer (#11880) @vuule
• Initial draft of policies and guidelines for libcudf usage. (#11853) @vyasr
• Add clear indication of non-GPU accelerated parameters in read_json docstring (#11825) @GregoryKimball
• Add developer docs for writing tests (#11199) @vyasr

🚀 New Features

• Adds an EventHandler to Java MemoryBuffer to be invoked on close (#12125) @abellina
• Support + in strings_udf (#12117) @brandon-b-miller
• Support upper and lower in strings_udf (#12099) @brandon-b-miller
• Add wheel builds (#12096) @vyasr
• Allow setting malloc heap size in string udfs (#12094) @brandon-b-miller
• Support strip, lstrip, and rstrip in strings_udf (#12091) @brandon-b-miller
• Mark nvcomp zstd compression stable (#12059) @jbrennan333
• Add debug-only onAllocated/onDeallocated to RmmEventHandler (#12054) @abellina
• Enable building against the libarrow contained in pyarrow (#12034) @vyasr
• Add strings like jni and native method (#12032) @cindyyuanjiang
• Cleanup common parsing code in JSON, CSV reader (#12022) @karthikeyann
• byte_range support for JSON Lines format (#12017) @karthikeyann
• Minor cleanup of root CMakeLists.txt for better organization (#11988) @robertmaynard
• Add inplace arithmetic operators to MaskedType (#11987) @brandon-b-miller
• Implement JNI for chunked Parquet reader (#11961) @ttnghia
• Add method argument to DataFrame.quantile (#11957) @rjzamora
• Add gpu memory watermark apis to JNI (#11950) @abellina
• Adds retryCount to RmmEventHandler.onAllocFailure (#11940) @abellina
• Enable returning string data from UDFs used through apply (#11933) @brandon-b-miller
• Switch over to rapids-cmake patches for thrust (#11921) @robertmaynard
• Add strings udf C++ classes and functions for phase II (#11912) @davidwendt
• Trim quotes for non-string values in nested json parsing (#11898) @karthikeyann
• Enable CEC for strings_udf (#11884) @brandon-b-miller
• ArrowIPCTableWriter writes en empty batch in the case of an empty table. (#11883) @firestarman
• Implement chunked Parquet reader (#11867) @ttnghia
• Add read_orc_metadata to libcudf (#11815) @vuule
• Support nested types as groupby keys in libcudf (#11792) @PointKernel
• Adding feature Truncate to DataFrame and Series (#11435) @VamsiTallam95

🛠️ Improvements

• Reduce number of tests marked spilling (#12197) @madsbk
• Pin dask and distributed for release (#12165) @galipremsagar
• Don't rely on GNU find in headers_test.sh (#12164) @wence-
• Update cp.clip call (#12148) @quasiben
• Enable automatic column projection in groupby().agg (#12124) @rjzamora
• Refactor purge_nonempty_nulls (#12111) @ttnghia
• Create an int8 column in read_csv when all elements are missing (#12110) @vuule
• Spilling to host memory (#12106) @madsbk
• First pass of pd.read_orc changes in tests (#12103) @galipremsagar
• Expose engine argument in dask_cudf.read_json (#12101) @rjzamora
• Remove CUDA 10 compatibility code. (#12088) @bdice
• Move and update dask nigthly install in CI (#12082) @galipremsagar
• Throw an error when libcudf is built without cuFile and LIBCUDF_CUFILE_POLICY is set to "ALWAYS" (#12080) @vuule
• Remove macros that inspect the contents of exceptions (#12076) @vyasr
• Fix ingest_raw_data performance issue in Nested JSON reader due to RVO (#12070) @karthikeyann
• Remove overflow error during decimal binops (#12063) @galipremsagar
• Change cudf::detail::...

[NIGHTLY] v23.02.00

🔗 Links

• Development Branch
• Compare with main branch

🚨 Breaking Changes

• Pin dask and distributed for release (#12695) @galipremsagar
• Change ways to access ptr in Buffer (#12587) @galipremsagar
• Remove column names (#12578) @vuule
• Default cudf::io::read_json to nested JSON parser (#12544) @vuule
• Switch engine=cudf to the new JSON reader (#12509) @galipremsagar
• Add trailing comma support for nested JSON reader (#12448) @karthikeyann
• Upgrade to arrow-10.0.1 (#12327) @galipremsagar
• Fail loudly to avoid data corruption with unsupported input in read_orc (#12325) @vuule
• CSV, JSON reader to infer integer column with nulls as int64 instead of float64 (#12309) @karthikeyann
• Remove deprecated code for 23.02 (#12281) @vyasr
• Null element for parsing error in numeric types in JSON, CSV reader (#12272) @karthikeyann
• Purge non-empty nulls for superimpose_nulls and push_down_nulls (#12239) @ttnghia
• Rename cudf::structs::detail::superimpose_parent_nulls APIs (#12230) @ttnghia
• Remove JIT type names, refactor id_to_type. (#12158) @bdice
• Floor division uses integer division for integral arguments (#12131) @wence-

🐛 Bug Fixes

• Fix update-version.sh (#12745) @raydouglass
• Fix a mask data corruption in UDF (#12647) @galipremsagar
• pre-commit: Update isort version to 5.12.0 (#12645) @wence-
• tests: Skip cuInit tests if cuda-gdb is not found or not working (#12644) @wence-
• Revert regex program java APIs and tests (#12639) @cindyyuanjiang
• Fix leaks in ColumnVectorTest (#12625) @jlowe
• Handle when spillable buffers own each other (#12607) @madsbk
• Fix incorrect null counts for sliced columns in JCudfSerialization (#12589) @jlowe
• lists: Transfer dtypes correctly through list.get (#12586) @wence-
• timedelta: Don't go via float intermediates for floordiv (#12585) @wence-
• Fixing BUG, get_next_chunk() should use the blocking function device_read() (#12584) @madsbk
• Make JNI QuoteStyle accessible outside ai.rapids.cudf (#12572) @mythrocks
• partition_by_hash(): support index (#12554) @madsbk
• Mixed Join benchmark bug due to wrong conditional column (#12553) @divyegala
• Update List Lexicographical Comparator (#12538) @divyegala
• Dynamically read PTX version (#12534) @brandon-b-miller
• build.sh switch to use RAPIDS magic value (#12525) @robertmaynard
• Loosen runtime arrow pinning (#12522) @vyasr
• Enable metadata transfer for complex types in transpose (#12491) @galipremsagar
• Fix issues with parquet chunked reader (#12488) @nvdbaranec
• Fix missing metadata transfer in concat for ListColumn (#12487) @galipremsagar
• Rename libcudf substring source files to slice (#12484) @davidwendt
• Fix compile issue with arrow 10 (#12465) @ttnghia
• Fix List offsets bug in mixed type list column in nested JSON reader (#12447) @karthikeyann
• Fix xfail incompatibilities (#12423) @vyasr
• Fix bug in Parquet column index encoding (#12404) @etseidl
• When building Arrow shared look for a shared OpenSSL (#12396) @robertmaynard
• Fix get_json_object to return empty column on empty input (#12384) @davidwendt
• Pin arrow 9 in testing dependencies to prevent conda solve issues (#12377) @vyasr
• Fix reductions any/all return value for empty input (#12374) @davidwendt
• Fix debug compile errors in parquet.hpp (#12372) @davidwendt
• Purge non-empty nulls in cudf::make_lists_column (#12370) @ttnghia
• Use correct memory resource in io::make_column (#12364) @vyasr
• Add code to detect possible malformed page data in parquet files. (#12360) @nvdbaranec
• Fail loudly to avoid data corruption with unsupported input in read_orc (#12325) @vuule
• Fix NumericPairIteratorTest for float values (#12306) @davidwendt
• Fixes memory allocation in nested JSON tokenizer (#12300) @elstehle
• Reconstruct dtypes correctly for list aggs of struct columns (#12290) @wence-
• Fix regex \A and \Z to strictly match string begin/end (#12282) @davidwendt
• Fix compile issue in json_chunked_reader.cpp (#12280) @ttnghia
• Change reductions any/all to return valid values for empty input (#12279) @davidwendt
• Only exclude join keys that are indices from key columns (#12271) @wence-
• Fix spill to device limit (#12252) @madsbk
• Correct behaviour of sort in concat for singleton concatenations (#12247) @wence-
• Purge non-empty nulls for superimpose_nulls and push_down_nulls (#12239) @ttnghia
• Patch CUB DeviceSegmentedSort and remove workaround (#12234) @davidwendt
• Fix memory leak in udf_string::assign(&&) function (#12206) @davidwendt
• Workaround thrust-copy-if limit in json get_tree_representation (#12190) @davidwendt
• Fix page size calculation in Parquet writer (#12182) @etseidl
• Add cudf::detail::sizes_to_offsets_iterator to allow checking overflow in offsets (#12180) @davidwendt
• Workaround thrust-copy-if limit in wordpiece-tokenizer (#12168) @davidwendt
• Floor division uses integer division for integral arguments (#12131) @wence-

📖 Documentation

• Fix link to NVTX (#12598) @sameerz
• Include missing groupby functions in documentation (#12580) @quasiben
• Fix documentation author (#12527) @bdice
• Update libcudf reduction docs for casting output types (#12526) @davidwendt
• Add JSON reader page in user guide (#12499) @GregoryKimball
• Link unsupported iteration API docstrings (#12482) @galipremsagar
• strings_udf doc update (#12469) @brandon-b-miller
• Update cudf_assert docs with correct NDEBUG behavior (#12464) @robertmaynard
• Update pre-commit hooks guide (#12395) @bdice
• Update test docs to not use detail comparison utilities (#12332) @PointKernel
• Fix doxygen description for regex_program::compute_working_memory_size (#12329) @davidwendt
• Add eval to docs. (#12322) @vyasr
• Turn on xfail_strict=true (#12244) @wence-
• Update 10 minutes to cuDF (#12114) @wence-

🚀 New Features

• Use kvikIO as the default IO backend (#12574) @vuule
• Use has_nonempty_nulls instead of may_contain_non_empty_nulls in superimpose_nulls and push_down_nulls (#12560) @ttnghia
• Add strings methods removeprefix and removesuffix (#12557) @davidwendt
• Add regex_program java APIs and unit tests (#12548) @cindyyuanjiang
• Default cudf::io::read_json to nested JSON parser (#12544) @vuule
• Make string quoting optional on CSV write (#12539) @mythrocks
• Use new nvCOMP API to optimize the compression temp memory size (#12533) @vuule
• Support "values" orient (array of arrays) in Nested JSON reader (#12498) @karthikeyann
• one_hot_encode to use experimental row comparators (#12478) @divyegala
• Support %W and %w format specifiers in cudf::strings::to_timestamps (#12475) @davidwendt
• Add JSON Writer (#12474) @karthikeyann
• Refactor thrust_copy_if into cudf::detail::copy_if_safe (#12455) @ttnghia
• Add trailing comma support for nested JSON reader (#12448) @karthikeyann
• Extract tokenize_json.hpp detail header from src/io/json/nested_json.hpp (#12432) @ttnghia
• JNI bindings to write CSV (#12425) @mythrocks
• Nested JSON depth benchmark (#12371) @karthikeyann
• Implement lists::reverse (#12336) @ttnghia
• Use device_read in experimental read_json (#12314) @vuule
• Implement JNI for strings::reverse (#12283) @ttnghia
• Null element for parsing error in numeric types in JSON, CSV reader (#12272) @karthikeyann
• Add cudf::strings:like function with multiple patterns (#12269) @davidwendt
• Add environment variable to control host memory allocation in hostdevice_vector (#12251) @vuule
• Add cudf::strings::reverse function (#12227) @davidwendt
• Selectively use dictionary encoding in Parquet writer (#12211) @etseidl
• Support replace in strings_udf (#12207) @brandon-b-miller
• Add support to read binary encoded decimals in parquet (#12205) @PointKernel
• Support regex EOL where the string ends with a new-line character (#12181) @davidwendt
• Updating stream_compaction/unique to use new row comparators (#12159) @divyegala
• Add device buffer datasource (#12024) @PointKernel
• Implement groupby apply with JIT (#11452) @bwyogatama

🛠️ Improvements

• Update shared workflow branches (#12696) @ajschmidt8
• Pin dask and distributed for release (#12695) @galipremsagar
• Don't upload libcudf-example to Anaconda.org (#12671) @ajschmidt8
• Pin wheel dependencies to same RAPIDS release (#12659) @sevagh
• Use CTK 118/cp310 branch of wheel workflows (#12602) @sevagh
• Change ways to access ptr in Buffer (#12587) @galipremsagar
• Version a parquet writer xfail (#12579) @galipremsagar
• Remove column names (#12578) @vuule
• Parquet reader optimization to address V100 regression. (#12577) @nvdbaranec
• Add support for category dtypes in CSV reader (#12571) @galipremsagar
• Remove spill_lock parameter from SpillableBuffer.get_ptr() (#12564) @madsbk
• Optimize cudf::make_lists_column (#12547) @ttnghia
• Remove cudf::strings::repeat_strings_output_sizes from Java and JNI (#12546) @ttnghia
• Test that cuInit is not called when RAPIDS_NO_INITIALIZE is set (#12545) @wence-
• Rework repeat_strings to use sizes-to-offsets utility (#12543) @davidwendt
• Replace exclusive_scan with sizes_to_offsets in cudf::lists::sequences (#12541) @davidwendt
• Rework nvtext::ngrams_tokenize to use sizes-to-offsets utility (#12540) @davidwendt
• Fix binary-ops gtests coded in namespace cudf::test (#12536) @davidwendt
• More @acquire_spill_lock() and as_buffer(..., exposed=False) (#12535) @madsbk
• Guard CUDA runtime APIs with error checking (#12531) @PointKernel
• Update TODOs from issue 10432. (#12528) @bdice
• Update rapids-cmake definitions version in GitHub Actions style checks. (#12511) @bdice
• Switch engine=cudf to the new JSON reader (#12509) @galipremsagar
• Fix SUM/MEAN aggregation type support. (#12503) @bdice
• Stop using pandas._testing (#12492) @vyasr
• Fix ROLLING_TEST gtests coded in namespace cudf::test...