Sandy Ryza created MAPREDUCE-4680:
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Summary: Job history cleaner should only check timestamps of files
in old enough directories
Key: MAPREDUCE-4680
URL: https://issues.apache.org/jira/browse/MAPREDUCE-4680
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: jobhistoryserver
Affects Versions: 2.0.0-alpha
Reporter: Sandy Ryza
Job history files are stored in yyyy/mm/dd folders. Currently, the job history
cleaner checks the modification date of each file in every one of these folders
to see whether it's past the maximum age. The load on HDFS could be reduced by
only checking the ages of files in directories that are old enough, as
determined by their name.
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