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Posted to mapreduce-issues@hadoop.apache.org by "Nigel Daley (JIRA)" <ji...@apache.org> on 2011/01/10 21:55:47 UTC
[jira] Updated: (MAPREDUCE-2079) PipesMapRunner does not use map
output classes
[ https://issues.apache.org/jira/browse/MAPREDUCE-2079?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Nigel Daley updated MAPREDUCE-2079:
-----------------------------------
Priority: Major (was: Blocker)
Issue Type: Improvement (was: Bug)
Not clear why this is a blocker. Also, seems like an improvement, not a bug. Marking it as such.
> PipesMapRunner does not use map output classes
> ----------------------------------------------
>
> Key: MAPREDUCE-2079
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2079
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: pipes
> Affects Versions: 0.20.1, 0.20.2, 0.20.3, 0.21.0, 0.21.1, 0.22.0
> Environment: Ubuntu 10.04 Lucid 64bit, Java(TM) SE Runtime Environment (build 1.6.0_20-b02), Hadoop 20.2 (Cloudera distribution)
> Reporter: Cosmin Catanoaie
> Original Estimate: 0.17h
> Remaining Estimate: 0.17h
>
> In org.apache.hadoop.mapred.pipes.PipesMapRunner.java at lines 71-72 instead of:
> - job.getOutputKeyClass() and
> - job.getOutputValueClass()
> there should be called:
> - job.getMapOutputKeyClass() and
> - job.getMapOutputValueClass()
> This modification will allow pipe jobs to use intermediate map output classes different from the job final output classes.
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