Ankur Dave created SPARK-37089:
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Summary: ParquetFileFormat registers task completion listeners
lazily, causing Python writer thread to segfault when off-heap vectorized
reader is enabled
Key: SPARK-37089
URL: https://issues.apache.org/jira/browse/SPARK-37089
Project: Spark
Issue Type: Bug
Components: PySpark, SQL
Affects Versions: 3.2.0, 3.1.2, 3.0.3
Reporter: Ankur Dave
Assignee: Ankur Dave
The task completion listener that closes the vectorized reader is registered
lazily in ParquetFileFormat#buildReaderWithPartitionValues(). Since task
completion listeners are executed in reverse order of registration, it always
runs before the Python writer thread can be interrupted.
This contradicts the assumption in https://github.com/apache/spark/pull/34245
that task completion listeners are registered bottom-up, preventing that fix
from working properly.
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