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Parallelize merge #36

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cswinter opened this issue Oct 13, 2018 · 0 comments
Open

Parallelize merge #36

cswinter opened this issue Oct 13, 2018 · 0 comments
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performance

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@cswinter
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Final pass for merging query results is done by a single thread. Parallelizing this would give large speed up for queries with high cardinality group bys.
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@cswinter