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https://issues.apache.org/jira/browse/HDFS-17408?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17832996#comment-17832996
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ASF GitHub Bot commented on HDFS-17408:
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zhangshuyan0 merged PR #6653:
URL: https://github.com/apache/hadoop/pull/6653
> Reduce the number of quota calculations in FSDirRenameOp
> --------------------------------------------------------
>
> Key: HDFS-17408
> URL: https://issues.apache.org/jira/browse/HDFS-17408
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: lei w
> Assignee: lei w
> Priority: Major
> Labels: pull-request-available
>
> During the execution of the rename operation, we first calculate the quota
> for the source INode using verifyQuotaForRename, and at the same time, we
> calculate the quota for the target INode. Subsequently, in
> RenameOperation#removeSrc, RenameOperation#removeSrc4OldRename, and
> RenameOperation#addSourceToDestination, the quota for the source directory is
> calculated again. In exceptional cases, RenameOperation#restoreDst and
> RenameOperation#restoreSource will also perform quota calculations for the
> source and target directories. In fact, many of the quota calculations are
> redundant and unnecessary, so we should optimize them away.
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