keeping files for tasks that match regex on task id
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Key: HADOOP-381
URL: http://issues.apache.org/jira/browse/HADOOP-381
Project: Hadoop
Issue Type: New Feature
Components: mapred
Affects Versions: 0.4.0
Reporter: Owen O'Malley
Assigned To: Owen O'Malley
Fix For: 0.5.0
For debugging map/reduce jobs, if a single task is producing bad results, but
*not* failing, it is hard to debug the problem. This patch lets you set a
pattern for task ids that will keep their files from being deleted when the
task and job complete. This allows the developer to run the task in the
IsolationRunner under the debugger.
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