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https://issues.apache.org/jira/browse/HADOOP-5882?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12715357#action_12715357
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Amareshwari Sriramadasu commented on HADOOP-5882:
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bq.Seems that this was committed to 0.20 only but not 0.21.
It is committed to 0.21, but not 0.20.1
The patch has been verified by running sort with new api, and observing
progress update in redude from 66% to 100% (the reduce phase).
> Progress is not updated when the New Reducer is running reduce phase
> --------------------------------------------------------------------
>
> Key: HADOOP-5882
> URL: https://issues.apache.org/jira/browse/HADOOP-5882
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Affects Versions: 0.20.0
> Reporter: Jothi Padmanabhan
> Assignee: Amareshwari Sriramadasu
> Priority: Blocker
> Fix For: 0.20.1, 0.21.0
>
> Attachments: patch-5882-1.txt, patch-5882.txt
>
>
> The old reducer calls informReduceProgress on a key change to update the
> progress. This call or equivalent should be called for the new reducer as
> well.
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