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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