tasks are left over when a job fails
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Key: HADOOP-225
URL: http://issues.apache.org/jira/browse/HADOOP-225
Project: Hadoop
Type: Bug
Components: mapred
Reporter: Yoram Arnon
Priority: Minor
when jobs are stopped or otherwise fail, tasks are often left around.
the job tracker shows that there are map or reduce (mostly reduce) tasks
running, when no job is running.
these accumulate over time.
eventually there are so many of those, that the job tracker can't launch new
tasks, requiring a restart of the MR cluster.
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