Github user dongjoon-hyun commented on a diff in the pull request:
https://github.com/apache/spark/pull/20619#discussion_r168557092
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetFileFormat.scala
---
@@ -414,16 +417,16 @@ class ParquetFileFormat
} else {
new ParquetRecordReader[UnsafeRow](new
ParquetReadSupport(convertTz))
}
+ val recordReaderIterator = new RecordReaderIterator(reader)
+ // Register a task completion lister before `initalization`.
+ taskContext.foreach(_.addTaskCompletionListener(_ =>
recordReaderIterator.close()))
reader.initialize(split, hadoopAttemptContext)
- reader
+ recordReaderIterator
}
- val iter = new RecordReaderIterator(parquetReader)
- taskContext.foreach(_.addTaskCompletionListener(_ => iter.close()))
--- End diff --
According to the reported leakage, this is too late.
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