Add the equivalent of JobStatus to end of JobHistory file
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Key: MAPREDUCE-3755
URL: https://issues.apache.org/jira/browse/MAPREDUCE-3755
Project: Hadoop Map/Reduce
Issue Type: Improvement
Components: jobhistoryserver, mrv2
Affects Versions: 0.23.0
Reporter: Arun C Murthy
Priority: Critical
Fix For: 0.23.1
In MR1 we have the notion of CompletedJobStatus store to aid fast responses to
job.getStatus. We need the equivalent for MR2, an option is to add the
jobStatus to the end of the JobHistory file to which the JHS can easily jump
ahead to and serve the query, it should also cache this for a fair number of
recently completed jobs.
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