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https://issues.apache.org/jira/browse/HDFS-7648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14289787#comment-14289787
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Tsz Wo Nicholas Sze commented on HDFS-7648:
-------------------------------------------

> Should I need to worry about the race between 
> DatanodeBlockId_Layout_threads(they will do a linking ) in Datastorage and 
> this call path?

Could you show me the line number in DataStorage.java?

> Verify the datanode directory layout
> ------------------------------------
>
>                 Key: HDFS-7648
>                 URL: https://issues.apache.org/jira/browse/HDFS-7648
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode
>            Reporter: Tsz Wo Nicholas Sze
>
> HDFS-6482 changed datanode layout to use block ID to determine the directory 
> to store the block.  We should have some mechanism to verify it.  Either 
> DirectoryScanner or block report generation could do the check.



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