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https://issues.apache.org/jira/browse/SPARK-22987?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon updated SPARK-22987:
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Labels: bulk-closed (was: )
> UnsafeExternalSorter cases OOM when invoking `getIterator` function.
> --------------------------------------------------------------------
>
> Key: SPARK-22987
> URL: https://issues.apache.org/jira/browse/SPARK-22987
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 2.2.0, 2.2.1
> Reporter: Lijia Liu
> Priority: Major
> Labels: bulk-closed
>
> ChainedIterator.UnsafeExternalSorter remains a Queue of UnsafeSorterIterator.
> When call `getIterator` function of UnsafeExternalSorter,
> UnsafeExternalSorter passes an ArrayList of UnsafeSorterSpillReader to the
> constructor of UnsafeExternalSorter. But, UnsafeSorterSpillReader maintains a
> byte array as buffer, witch capacity is more than 1 MB. When spilling
> frequently, this case maybe causes OOM.
> I try to change the Queue in ChainedIterator to a Iterator.
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