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https://issues.apache.org/jira/browse/HDFS-16055?focusedWorklogId=608683&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-608683
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ASF GitHub Bot logged work on HDFS-16055:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 08/Jun/21 19:17
Start Date: 08/Jun/21 19:17
Worklog Time Spent: 10m
Work Description: smengcl commented on pull request #3078:
URL: https://github.com/apache/hadoop/pull/3078#issuecomment-857033639
The cause of the UT failure `testRenameDirAndDeleteSnapshot_1` is that
features in the stream are returned as **references**. While this is fine for
AclFeature or XAttrFeature. A `DirectoryWithQuotaFeature` will get updated when
namespace or space usage has changed. Hence the snapshot inode sharing a same
`DirectoryWithQuotaFeature` with the original dir inode becomes a problem in
this test case where it compares the quota usage before and after NN restart.
Updated the patch to create copy of the `DirectoryWithQuotaFeature`.
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Issue Time Tracking
-------------------
Worklog Id: (was: 608683)
Time Spent: 40m (was: 0.5h)
> Quota is not preserved in snapshot INode
> ----------------------------------------
>
> Key: HDFS-16055
> URL: https://issues.apache.org/jira/browse/HDFS-16055
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
> Affects Versions: 3.3.0
> Reporter: Siyao Meng
> Assignee: Siyao Meng
> Priority: Major
> Labels: pull-request-available
> Time Spent: 40m
> Remaining Estimate: 0h
>
> Quota feature is not preserved during snapshot creation, this causes
> {{INodeDirectory#metadataEquals}} to ALWAYS return true. Therefore,
> {{snapshotDiff}} will ALWAYS return the snapshot root as modified, even if
> the quota is set before the snapshot creation:
> {code:bash}
> $ hdfs snapshotDiff /diffTest s0 .
> Difference between snapshot s0 and current directory under directory
> /diffTest:
> M .
> {code}
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