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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-12855) Fsck violates namesystem locking
Date Mon, 04 Dec 2017 19:27:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12855?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16277323#comment-16277323
] 

Konstantin Shvachko commented on HDFS-12855:
--------------------------------------------

Yes I believe it affects all versions. Delete is clearly one case. But any change in file
path (move or rename) will cause problems as well. See HDFS-12832 as an example.

> Fsck violates namesystem locking 
> ---------------------------------
>
>                 Key: HDFS-12855
>                 URL: https://issues.apache.org/jira/browse/HDFS-12855
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.7.4
>            Reporter: Konstantin Shvachko
>
> {{NamenodeFsck}} access {{FSNamesystem}} structures, such as INodes, BlockInfo without
holding a lock. See e.g. {{NamenodeFsck.blockIdCK()}}.



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