JobHistoryServer should store tokens to authenticate clients across restart
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Key: MAPREDUCE-3945
URL: https://issues.apache.org/jira/browse/MAPREDUCE-3945
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: mrv2, security
Affects Versions: 0.23.0
Reporter: Vinod Kumar Vavilapalli
Assignee: Vinod Kumar Vavilapalli
JobHistoryServer gives off delegation tokens so that clients can talk to it. It
needs to store them off somewhere to authenticate clients across the server
restart
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