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Posted to mapreduce-dev@hadoop.apache.org by "Sandy Ryza (JIRA)" <ji...@apache.org> on 2012/09/25 00:18:08 UTC
[jira] [Created] (MAPREDUCE-4680) Job history cleaner should only
check timestamps of files in old enough directories
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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