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https://issues.apache.org/jira/browse/HDFS-17839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18021725#comment-18021725
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ASF GitHub Bot commented on HDFS-17839:
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huangzhaobo99 closed pull request #7988: HDFS-17839. Rename skips path without
valid 'DirectoryWithQuotaFeature' in FSDirRenameOp
URL: https://github.com/apache/hadoop/pull/7988
> Rename skips path without valid 'DirectoryWithQuotaFeature' in FSDirRenameOp
> ----------------------------------------------------------------------------
>
> Key: HDFS-17839
> URL: https://issues.apache.org/jira/browse/HDFS-17839
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Zhaobo Huang
> Assignee: Zhaobo Huang
> Priority: Major
> Labels: pull-request-available
>
> Calculating quota usage is primarily used to update directories labeled with
> the DirectoryWithQuotaFeature tag. When there is no valid
> DirectoryWithQuotaFeature in the paths of src and dst (excluding the root
> directory), the quota should not be calculated in rename scenarios:
> 1. rename1 does not change the quota of the root directory, so neither src
> nor dst contains DirectoryWithQuotaFeature. The operation of calculating
> quota should be skipped.
> 2. In the scenario of overwriting, rename2 still needs to consider
> calculating quota, otherwise it will affect the quotausage value of the root
> directory.
> 3. For directories enabled for snapshot creation, quota calculation is also
> necessary; otherwise, deleting snapshot files may affect the root directory's
> quota.
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