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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5670) CombineFileRecordReader should report progress when moving to the next file
Date Fri, 14 Feb 2014 14:53:58 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5670?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13901508#comment-13901508
] 

Hudson commented on MAPREDUCE-5670:
-----------------------------------

SUCCESS: Integrated in Hadoop-Mapreduce-trunk #1698 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1698/])
MAPREDUCE-5670. CombineFileRecordReader should report progress when moving to the next file.
Contributed by Chen He (jlowe: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1568118)
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/lib/CombineFileRecordReader.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/CombineFileRecordReader.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapred/lib/TestCombineFileRecordReader.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/lib/input/TestCombineFileRecordReader.java


> CombineFileRecordReader should report progress when moving to the next file
> ---------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-5670
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5670
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.9
>            Reporter: Jason Lowe
>            Assignee: Chen He
>            Priority: Minor
>             Fix For: 2.4.0
>
>         Attachments: MR-5670v3.patch
>
>
> If a combine split consists of many "empty" files (i.e.: no record found by the underlying
record reader) then theoretically a task can timeout due to lack of reported progress.



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