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Posted to mapreduce-issues@hadoop.apache.org by "Matt Foley (JIRA)" <ji...@apache.org> on 2013/05/06 04:58:16 UTC
[jira] [Updated] (MAPREDUCE-5046) backport MAPREDUCE-1423 to
mapred.lib.CombineFileInputFormat
[ https://issues.apache.org/jira/browse/MAPREDUCE-5046?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Matt Foley updated MAPREDUCE-5046:
----------------------------------
Fix Version/s: (was: 1.2.0)
1.3.0
> 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: 1.3.0
>
>
> 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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