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From "Tsz Wo Nicholas Sze (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9730) Storage ID update does not happen when there is a layout change
Date Tue, 02 Feb 2016 07:47:40 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9730?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15127845#comment-15127845
] 

Tsz Wo Nicholas Sze commented on HDFS-9730:
-------------------------------------------

[~vinayrpet], thanks for hints.  I understand the bug now.  The bug is that layout version
is updated before createStorageID(..).

> Storage ID update does not happen when there is a layout change
> ---------------------------------------------------------------
>
>                 Key: HDFS-9730
>                 URL: https://issues.apache.org/jira/browse/HDFS-9730
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Kihwal Lee
>            Assignee: Tsz Wo Nicholas Sze
>
> HDFS-9654 will cause test failures when we increment the datanode layout version next
time.
> {noformat}
> TestDatanodeStartupFixesLegacyStorageIDs#testUpgradeFrom22via26FixesStorageIDs
> TestDatanodeStartupFixesLegacyStorageIDs#testUpgradeFrom22FixesStorageIDs
> {noformat}
> This is because createStorageID() is no longer called when it goes through the layout
upgrade path. 



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