transmission errors to the reduce will cause map output to be considered lost
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Key: HADOOP-597
URL: http://issues.apache.org/jira/browse/HADOOP-597
Project: Hadoop
Issue Type: Bug
Affects Versions: 0.7.0
Reporter: Owen O'Malley
Assigned To: Owen O'Malley
Fix For: 0.7.1
When the mapOutput servlet gets an IOException from reading the map output
file, it correctly declares the map output lost. However, an IOException
writing to the socket should NOT cause the map output to be declared lost.
Unfortunately, the current implementation always declares the map output lost.
When the map output is lost, the map is re-run on a different computer.
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