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https://issues.apache.org/jira/browse/MAPREDUCE-1073?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12891328#action_12891328
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Dick King commented on MAPREDUCE-1073:
--------------------------------------
In my previous comment I should have said that this patch addresses BOTH
points, and is complete modulo a forward port.
> Progress reported for pipes tasks is incorrect.
> -----------------------------------------------
>
> Key: MAPREDUCE-1073
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1073
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: pipes
> Affects Versions: 0.20.1
> Reporter: Sreekanth Ramakrishnan
> Assignee: Dick King
> Attachments: mapreduce-1073--2010-03-31.patch,
> mapreduce-1073--2010-04-06.patch,
> MAPREDUCE-1073--yhadoop20--2010-07-22.patch, MAPREDUCE-1073_yhadoop20.patch
>
>
> Currently in pipes,
> {{org.apache.hadoop.mapred.pipes.PipesMapRunner.run(RecordReader<K1, V1>,
> OutputCollector<K2, V2>, Reporter)}} we do the following:
> {code}
> while (input.next(key, value)) {
> downlink.mapItem(key, value);
> if(skipping) {
> downlink.flush();
> }
> }
> {code}
> This would result in consumption of all the records for current task and
> taking task progress to 100% whereas the actual pipes application would be
> trailing behind.
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