Sean R. Owen created SPARK-36603:
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Summary: Use WeakReference over SoftReference in LevelDB to avoid
retaining iterator refs
Key: SPARK-36603
URL: https://issues.apache.org/jira/browse/SPARK-36603
Project: Spark
Issue Type: Bug
Components: Spark Core
Affects Versions: 3.1.2
Reporter: Sean R. Owen
Assignee: Sean R. Owen
See discussion at
https://github.com/apache/spark/pull/28769#issuecomment-906722390
The SoftReference used to track iterators in LevelDB can prevent them from
being GCed early enough, thus finalized and closed. A WeakReference would be
more readily collected, and solves an apparent actual issue running a 3.1.x SHS.
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