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TaskVineExecutor: Enable exception chaining when functions are executed to provide detailed error messages. #2926

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Oct 26, 2023
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TaskVineExecutor: Enable exception chaining when functions are executed to provide detailed error messages. #2926

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16 changes: 12 additions & 4 deletions parsl/executors/taskvine/executor.py
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Original file line number Diff line number Diff line change
Expand Up @@ -643,14 +643,22 @@ def _collect_taskvine_results(self):
with open(task_report.result_file, 'rb') as f_in:
result = deserialize(f_in.read())
except Exception as e:
logger.debug(f'Cannot load result from result file {task_report.result_file}. Exception: {e}')
future.set_exception(TaskVineTaskFailure('Cannot load result from result file', None))
logger.error(f'Cannot load result from result file {task_report.result_file}. Exception: {e}')
ex = TaskVineTaskFailure('Cannot load result from result file', None)
ex.__cause__ = e
future.set_exception(ex)
else:
future.set_result(result)
if isinstance(result, Exception):
ex = TaskVineTaskFailure('Task execution raises an exception', result)
ex.__cause__ = result
future.set_exception(ex)
else:
future.set_result(result)
else:
# If there are no results, then the task failed according to one of
# taskvine modes, such as resource exhaustion.
future.set_exception(TaskVineTaskFailure(task_report.reason, None))
ex = TaskVineTaskFailure(task_report.reason, None)
future.set_exception(ex)

# decrement outstanding task counter
with self._outstanding_tasks_lock:
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