Pending Jobs Metric can get off if job is submitted with invalid HDFS
delegation token.
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Key: MAPREDUCE-3911
URL: https://issues.apache.org/jira/browse/MAPREDUCE-3911
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: mrv1
Affects Versions: 1.0.0
Reporter: Robert Joseph Evans
If a job is submitted, but the HDFS delegation token is invalid, The pending
jobs counter will be incremented, then an exception will be thrown when we
cannot get an instance of FileSystem to read the jobs configuration. The error
is returned, but the pending counter is never decremented.
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