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https://issues.apache.org/jira/browse/HDFS-11705?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15984868#comment-15984868
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Daryn Sharp commented on HDFS-11705:
------------------------------------

Since the revert of HDFS-10797, I started working on 2.8 optimizations to 
reduce object allocation rates in content summary and quota calcs.  I noticed 
and have been debugging this same problem.

> BUG: Inconsistent storagespace for directory
> --------------------------------------------
>
>                 Key: HDFS-11705
>                 URL: https://issues.apache.org/jira/browse/HDFS-11705
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: snapshots
>    Affects Versions: 3.0.0-alpha2
>            Reporter: Wei-Chiu Chuang
>
> I was running a a test TestRenameWithSnapshots.testDu, and found several 
> errors in the log:
> {noformat}
> 2017-04-26 05:07:30,229 [IPC Server handler 7 on 52578] ERROR 
> namenode.NameNode (DirectoryWithQuotaFeature.java:checkStoragespace(141)) - 
> BUG: Inconsistent storagespace for directory /testDu. Cached = 6144 != 
> Computed = 3072
> {noformat}
> The test completed without failure nonetheless.



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