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https://issues.apache.org/jira/browse/HADOOP-1105?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12486886
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Tom White commented on HADOOP-1105:
-----------------------------------
Merged into 0.12 branch in revision 525761.
> Reducers don't make "progress" while iterating through values
> -------------------------------------------------------------
>
> Key: HADOOP-1105
> URL: https://issues.apache.org/jira/browse/HADOOP-1105
> Project: Hadoop
> Issue Type: Bug
> Components: mapred
> Affects Versions: 0.12.0
> Reporter: Owen O'Malley
> Assigned To: Owen O'Malley
> Fix For: 0.12.3
>
> Attachments: 1105-3.patch, 1105-4.patch, 1105.new1.patch,
> 1105.new1.patch, 1105.patch, 1105.patch
>
>
> Reduces make progress when they go to a new key, but not when they read the
> next value, which could cause reduces to time out when they have a lot of
> values for the same key.
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