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From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10664) layoutVersion mismatch between Namenode VERSION file and Journalnode VERSION file after cluster upgrade
Date Wed, 20 Jul 2016 21:44:20 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10664?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15386685#comment-15386685
] 

Chris Nauroth commented on HDFS-10664:
--------------------------------------

[~aanand001c], thank you for filing this.  I had an old note to myself to file a JIRA for
this, which I had overlooked.

I can confirm that this does happen.  In practice, I haven't observed any negative side effects
from this, but I agree that we should update that file for consistency.

> layoutVersion mismatch between Namenode VERSION file and Journalnode VERSION file after
cluster upgrade
> -------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-10664
>                 URL: https://issues.apache.org/jira/browse/HDFS-10664
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: ha, hdfs
>    Affects Versions: 2.7.1
>            Reporter: Amit Anand
>
> After a cluster is upgraded I see a mismatch in {{layoutVersion}} between NN VERSION
file and JN VERSION file.
> Here is what I see:
> Before cluster upgrade:
> ==================
> {code}
> ## Version file from NN current directory
> namespaceID=109645726
> clusterID=CID-edcb62c5-bc1f-49f5-addb-37827340b5de
> cTime=0
> storageType=NAME_NODE
> blockpoolID=BP-786201894-10.0.100.11-1466026941507
> layoutVersion=-60
> {code}
> {code}
> ## Version file from JN current directory
> namespaceID=109645726
> clusterID=CID-edcb62c5-bc1f-49f5-addb-37827340b5de
> cTime=0
> storageType=JOURNAL_NODE
> layoutVersion=-60
> {code}
> After cluster upgrade:
> =================
> {code}
> ## Version file from NN current directory
> namespaceID=109645726
> clusterID=CID-edcb62c5-bc1f-49f5-addb-37827340b5de
> cTime=0
> storageType=NAME_NODE
> blockpoolID=BP-786201894-10.0.100.11-1466026941507
> layoutVersion=-63
> {code}
> {code}
> ## Version file from JN current directory
> namespaceID=109645726
> clusterID=CID-edcb62c5-bc1f-49f5-addb-37827340b5de
> cTime=0
> storageType=JOURNAL_NODE
> layoutVersion=-60
> {code}
> Since {{Namenode}} is what creates {{Journalnode}} {{VERSION}} file during {{initializeSharedEdits}},
it should also update the file with correct information after the cluster is upgraded and
{{hdfs dfsadmin -finalizeUpgrade}} has been executed.



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