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Posted to mapreduce-issues@hadoop.apache.org by "Konstantin Weitz (JIRA)" <ji...@apache.org> on 2014/01/04 18:38:54 UTC

[jira] [Created] (MAPREDUCE-5708) Duplicate String.format in getSpillFileForWrite

Konstantin Weitz created MAPREDUCE-5708:
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             Summary: Duplicate String.format in 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


The code responsible for formatting the spill file name (namely {code}getSpillFileForWrite{code}) unnecessarily calls {code}String.format{code} twice. This does not only affect performance, but leads to the weird requirement that task attempt ids cannot contain {code}%{code} characters (because these would be interpreted as format specifiers in the outside {code}String.format{code} call).

I assume this was done by mistake, as it could only be useful if task attempt ids contained {code}%n{code}.



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