Jing Zhao created HDFS-4479:
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Summary: In branch-1, logSync() may be called with the
FSNamesystem lock held in commitBlockSynchronization
Key: HDFS-4479
URL: https://issues.apache.org/jira/browse/HDFS-4479
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Jing Zhao
Assignee: Jing Zhao
In FSNamesystem#commitBlockSynchronization of branch-1, logSync() may be called
when the FSNamesystem lock is held. Similar with HDFS-4186, this may cause some
performance issue.
Since logSync is called right after the synchronization section, we can simply
remove the logSync call.
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