Felix N created HDFS-17865:
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Summary: Prevent updateNameDirSize() from blocking rollEditLog()
Key: HDFS-17865
URL: https://issues.apache.org/jira/browse/HDFS-17865
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Felix N
Assignee: Felix N
updateNameDirSize() has only metrics functionality (i.e. not very critical) but
has a fair bit of performance impact in one of the more critical methods
(rollEditLog). It's better to either reduce the metrics update frequency or
make it update asynchronously to avoid interference with rollEditLog().
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