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Haitao Yao commented on PIG-2812: --------------------------------- well, the spilled files should have been cleared under the normal condition. But if your job failed, and the Tasktracker reuses the child java process, the OOM would happen. I really think spill to one file is better. > 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. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira