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From "J.Andreina (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7934) During Rolling upgrade rollback ,standby namenode startup fails.
Date Fri, 10 Apr 2015 10:04:13 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7934?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14489301#comment-14489301

J.Andreina commented on HDFS-7934:

Thanks [~jingzhao] and [~vinayrpet] for your comments. 

I verified starting standby namenode with  "-bootstrapstandby" flag , instead of starting
with "-rollingUpgrade rollback" option (as mentioned in document).
I did not face the HDFS-7934 and HDFS-7952 issues. 

I'll soon provide a patch for updating the document. 

> During Rolling upgrade rollback ,standby namenode startup fails.
> ----------------------------------------------------------------
>                 Key: HDFS-7934
>                 URL: https://issues.apache.org/jira/browse/HDFS-7934
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: J.Andreina
>            Assignee: J.Andreina
>            Priority: Critical
>         Attachments: HDFS-7934.1.patch
> During Rolling upgrade rollback , standby namenode startup fails , while loading edits
and when  there is no local copy of edits created after upgrade ( which is already been removed
 by Active Namenode from journal manager and from Active's local). 

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