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https://issues.apache.org/jira/browse/SPARK-16420?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reynold Xin resolved SPARK-16420.
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Resolution: Fixed
Assignee: Ryan Blue
Fix Version/s: 2.0.0
> UnsafeShuffleWriter leaks compression streams with off-heap memory.
> -------------------------------------------------------------------
>
> Key: SPARK-16420
> URL: https://issues.apache.org/jira/browse/SPARK-16420
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 2.0.0
> Reporter: Ryan Blue
> Assignee: Ryan Blue
> Fix For: 2.0.0
>
>
> When merging spill files using Java file streams, {{UnsafeShuffleWriter}}
> opens a decompression stream for each shuffle part and [never closes
> them|https://github.com/apache/spark/blob/master/core/src/main/java/org/apache/spark/shuffle/sort/UnsafeShuffleWriter.java#L352-357].
> When the compression codec holds off-heap resources, these aren't cleaned up
> until the finalizer is called.
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