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From "Gera Shegalov (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-6724) Single shuffle to memory must not exceed Integer#MAX_VALUE
Date Tue, 02 Aug 2016 06:10:20 GMT

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

Gera Shegalov updated MAPREDUCE-6724:
-------------------------------------
    Summary: Single shuffle to memory must not exceed Integer#MAX_VALUE  (was: Unsafe conversion
from long to int in MergeManagerImpl.unconditionalReserve())

> Single shuffle to memory must not exceed Integer#MAX_VALUE
> ----------------------------------------------------------
>
>                 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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