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https://issues.apache.org/jira/browse/SPARK-38273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17495811#comment-17495811
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Hyukjin Kwon commented on SPARK-38273:
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[~kevin.w.sewell] please go ahead for a PR. cc [~dongjoon] FYI
> Native memory leak in SparkPlan
> -------------------------------
>
> Key: SPARK-38273
> URL: https://issues.apache.org/jira/browse/SPARK-38273
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.2.0, 3.2.1
> Reporter: Kevin Sewell
> Priority: Major
>
> SPARK-34647 replaced the ZstdInputStream with ZstdInputStreamNoFinalizer.
> This meant that all usages of `CompressionCodec.compressedInputStream` would
> need to manually close the stream as this would no longer be handled by GC
> finaliser mechanism.
> In SparkPlan, the result of `CompressionCodec.compressedInputStream` is
> wrapped in an Iterator which never calls close. This implementation needs to
> make use of NextIterator which allows for the closing of underlying streams.
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