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Haitao Yao commented on PIG-2812: --------------------------------- Shall we change the Parent class : org.apache.pig.data.DefaultAbstractBag or just modify the InternalCachedBag ? I don't know why DefaultAbstractBag writes a tmp file for every tuple. In our own code base, I just modified the InternalCachedBag, because I don't want know the how the subclasses of DefaultAbstractBag gonna behave if I modify the whole spill logic . I want to contribute to this. thanks. > 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