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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5794) Fix the inconsistency of layout version number of ADD_DATANODE_AND_STORAGE_UUIDS between trunk and branch-2
Date Sat, 18 Jan 2014 11:09:20 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13875617#comment-13875617
] 

Hudson commented on HDFS-5794:
------------------------------

SUCCESS: Integrated in Hadoop-Yarn-trunk #456 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk/456/])
HDFS-5794. Fix the inconsistency of layout version number of ADD_DATANODE_AND_STORAGE_UUIDS
between trunk and branch-2. Contributed by Jing Zhao. (jing9: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1559209)
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/LayoutVersion.java


> Fix the inconsistency of layout version number of ADD_DATANODE_AND_STORAGE_UUIDS between
trunk and branch-2
> -----------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-5794
>                 URL: https://issues.apache.org/jira/browse/HDFS-5794
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 3.0.0, 2.4.0
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
>            Priority: Minor
>             Fix For: 3.0.0
>
>         Attachments: HDFS-5794.000.patch, HDFS-5794.001.patch
>
>
> Currently in trunk, we have the layout version:
> {code}
> EDITLOG_ADD_BLOCK(-48, ...),
> CACHING(-49, ...),
> ADD_DATANODE_AND_STORAGE_UUIDS(-50, ...);
> {code}
> And in branch-2, we have:
> {code}
> EDITLOG_SUPPORT_RETRYCACHE(-47, ...),
> ADD_DATANODE_AND_STORAGE_UUIDS(-49, -47, ...);
> {code}
> We plan to backport HDFS-5704 and HDFS-5777 to branch-2, thus EDITLOG_ADD_BLOCK will
also take -48 in branch-2. However, we cannot change ADD_DATANODE_AND_STORAGE_UUIDS to -50
in branch-2. Otherwise fsimages written by trunk and branch-2 have the same layout -50 but
branch-2 cannot read the -50 fsimage if it is written by trunk.



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