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Posted to mapreduce-issues@hadoop.apache.org by "Devaraj K (JIRA)" <ji...@apache.org> on 2015/05/14 18:16:59 UTC
[jira] [Updated] (MAPREDUCE-5708) Duplicate String.format in
YarnOutputFiles.getSpillFileForWrite
[ https://issues.apache.org/jira/browse/MAPREDUCE-5708?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Devaraj K updated MAPREDUCE-5708:
---------------------------------
Summary: Duplicate String.format in YarnOutputFiles.getSpillFileForWrite (was: Duplicate String.format in getSpillFileForWrite)
> Duplicate String.format in YarnOutputFiles.getSpillFileForWrite
> ---------------------------------------------------------------
>
> Key: MAPREDUCE-5708
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5708
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Konstantin Weitz
> Priority: Minor
> Labels: BB2015-05-TBR
> Attachments: 0001-Removed-duplicate-String.format.patch
>
> Original Estimate: 10m
> Remaining Estimate: 10m
>
> The code responsible for formatting the spill file name (namely _getSpillFileForWrite_) unnecessarily calls _String.format_ twice. This does not only affect performance, but leads to the weird requirement that task attempt ids cannot contain _%_ characters (because these would be interpreted as format specifiers in the outside _String.format_ call).
> I assume this was done by mistake, as it could only be useful if task attempt ids contained _%n_.
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