JobTracker fails to remove setup tip mapping from taskidToTIPMap if the job
gets killed before the setup returns
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Key: MAPREDUCE-1291
URL: https://issues.apache.org/jira/browse/MAPREDUCE-1291
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: jobtracker
Reporter: Amar Kamat
Priority: Critical
Here is the scenario :
1) job inits
2) setup task is launched on tt1 and an entry is made in taskidToTIPMap
3) job is killed
4) cleanup gets launched on tt2
5) cleanup returns KILLING the job and removing all the *completed*
setup/map/reduce task mappings from taskidToTIPMap. Here the setup is still
RUNNING state.
6) job retires and all the map/reduce mappings from taskidToTIPMap are removed
In the end the setup tip still lingers in the taskidToTIPMap map. Because of
the backreference from the tip to jip, the whole job stays in memory forever.
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