Have a better shutdown and cleanup mechanism in JobTracker
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Key: HADOOP-3710
URL: https://issues.apache.org/jira/browse/HADOOP-3710
Project: Hadoop Core
Issue Type: Bug
Components: mapred
Reporter: Amar Kamat
The {{main()}} of JobTracker waits for {{offerSerice()}} to complete.
{{offerService()}} does a {{Thread.join()}} on {{interTrackerServer}}.
{{JobTracker.close()}} stops {{interTrackerServer}} pretty early and hence
there is a fair chance of JobTracker exiting before other threads are stopped
_properly_.
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