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From "Liu Shaohui (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-8690) Reduce unnecessary getFileStatus hdfs calls in TTL hfile and hlog cleanners
Date Wed, 05 Jun 2013 03:39:22 GMT
Liu Shaohui created HBASE-8690:
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             Summary: Reduce unnecessary getFileStatus hdfs calls in TTL hfile and hlog cleanners
                 Key: HBASE-8690
                 URL: https://issues.apache.org/jira/browse/HBASE-8690
             Project: HBase
          Issue Type: Improvement
          Components: master
            Reporter: Liu Shaohui
            Priority: Minor


For each in file in archive dir, the TimeToLiveHFileCleaner need call getFileStatus to get
the modify time of file. Actually the CleanerChore have had the file status when listing its
parent dir. 

When we set the TTL to 7 days in our cluster for data security, the number of files left in
archive dir is up to 65 thousands. In each clean period, TimeToLiveHFileCleaner will generate
ten thousand getFileStatus call in a short time, which is very heavy for hdfs namenode.

Fix: Change the path param to FileStatus in isFileDeletable method and reduce unnecessary
getFileStatus hdfs calls in TTL cleaners.



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