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From "Eric Payne (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-6334) Fetcher#copyMapOutput is leaking usedMemory upon IOException during InMemoryMapOutput shuffle handler
Date Fri, 24 Apr 2015 22:04:39 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-6334?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eric Payne updated MAPREDUCE-6334:
----------------------------------
    Status: Patch Available  (was: Open)

Version 1 of patch. [~jlowe] would you mind taking a look?

> Fetcher#copyMapOutput is leaking usedMemory upon IOException during InMemoryMapOutput
shuffle handler
> -----------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-6334
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6334
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 2.7.0
>            Reporter: Eric Payne
>            Assignee: Eric Payne
>            Priority: Blocker
>         Attachments: MAPREDUCE-6334.001.patch
>
>
> We are seeing this happen when
> - an NM's disk goes bad during the creation of map output(s)
> - the reducer's fetcher can read the shuffle header and reserve the memory
> - but gets an IOException when trying to shuffle for InMemoryMapOutput
> - shuffle fetch retry is enabled



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