Reducer's pass merger should utilize temporary directories on different disks
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Key: HADOOP-590
URL: http://issues.apache.org/jira/browse/HADOOP-590
Project: Hadoop
Issue Type: Improvement
Components: mapred
Reporter: Runping Qi
The current implementation of pass merge of SequenceFile class uses the same
temp directory for the in/out files of the pass merger class, even though when
multiple temp dirs are available. Thus, it cannot fully utlize the advantage of
multiple disks during sort.
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