Map outputs can't have a different type of compression from the reduce outputs
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Key: HADOOP-647
URL: http://issues.apache.org/jira/browse/HADOOP-647
Project: Hadoop
Issue Type: Improvement
Components: mapred
Affects Versions: 0.7.2
Reporter: Owen O'Malley
Assigned To: Owen O'Malley
Fix For: 0.8.0
Attachments: map-out-compress-type.patch
Right now there is only a single knob to control the compression type for
sequence files. Sorting and merging is faster with record compression, but the
files are smaller with block compression. I'd like to introduce a
mapOutputCompressionType that lets the application control how the map outputs
are compressed.
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