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https://issues.apache.org/jira/browse/MAPREDUCE-5046?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sangjin Lee resolved MAPREDUCE-5046.
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Resolution: Fixed
Fix Version/s: 1.2.0
It was fixed as part of MAPREDUCE-5038.
> backport MAPREDUCE-1423 to mapred.lib.CombineFileInputFormat
> ------------------------------------------------------------
>
> Key: MAPREDUCE-5046
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5046
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: client
> Affects Versions: 1.1.1
> Reporter: Sangjin Lee
> Fix For: 1.2.0
>
>
> The CombineFileInputFormat class in org.apache.hadoop.mapred.lib (the old
> API) has a couple of issues. These issues were addressed in the new API
> (MAPREDUCE-1423), but the old class was not fixed.
> The main issue the JIRA refers to is a performance problem. However, IMO
> there is a more serious problem which is a thread-safety issue (rackToNodes)
> which was fixed alongside.
> What is the policy on addressing issues in the old API? Can we backport this
> to the old class?
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