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https://issues.apache.org/jira/browse/MAPREDUCE-3384?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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JiangKai updated MAPREDUCE-3384:
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Attachment: MAPREDUCE-3384.patch
> Add warning message for org.apache.hadoop.mapreduce.lib.reduce.LongSumReducer
> -----------------------------------------------------------------------------
>
> Key: MAPREDUCE-3384
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3384
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Reporter: JiangKai
> Priority: Minor
> Fix For: 0.24.0
>
> Attachments: MAPREDUCE-3384.patch
>
>
> When we call the function reduce() of LongSumReducer,the result may overflow.
> We should send a warning message to users if overflow occurs.
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