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From "Gera Shegalov (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-6724) Unsafe conversion from long to int in MergeManagerImpl.unconditionalReserve()
Date Sun, 31 Jul 2016 21:38:20 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-6724?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gera Shegalov updated MAPREDUCE-6724:
-------------------------------------
    Status: Open  (was: Patch Available)

> Unsafe conversion from long to int in MergeManagerImpl.unconditionalReserve()
> -----------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-6724
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6724
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Haibo Chen
>            Assignee: Haibo Chen
>         Attachments: MAPREDUCE-6724.009.patch, mapreduce6724.001.patch, mapreduce6724.002.patch,
mapreduce6724.003.patch, mapreduce6724.004.patch, mapreduce6724.005.patch, mapreduce6724.006.patch,
mapreduce6724.007.patch, mapreduce6724.008.patch
>
>
> When shuffle is done in memory, MergeManagerImpl converts the requested size to an int
to allocate an instance of InMemoryMapOutput. This results in an overflow if the requested
size is bigger than Integer.MAX_VALUE and eventually causes the reducer to fail.



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