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https://issues.apache.org/jira/browse/PIG-2812?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13413301#comment-13413301
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Alan Gates commented on PIG-2812:
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Why not just change the {{clear}} method to delete the temp file?
> Spill InternalCachedBag into only 1 file
> ----------------------------------------
>
> Key: PIG-2812
> URL: https://issues.apache.org/jira/browse/PIG-2812
> Project: Pig
> Issue Type: Bug
> Components: data
> Reporter: Haitao Yao
> Fix For: 0.11
>
> Attachments: aa.jpg
>
>
> I encountered a reducer's OOM because of java.io.DeleteOnExitHook. And I
> found out that the InternalCachedBag creates a seperate tmp file, and the tmp
> files is deleted on exit. So the file delete hook caused the OOM.
> Why not just hold the tmp file handle and spill only one tmp file?
> Too many tmp files may block the tasktracker start process, if the tmp files
> are not cleaned on time and the tasktracker restarts at this specific time.
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