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From "Kai Sasaki (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7302) namenode -rollingUpgrade downgrade may finalize a rolling upgrade
Date Thu, 19 Feb 2015 02:16:12 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14326899#comment-14326899
] 

Kai Sasaki commented on HDFS-7302:
----------------------------------

[~szetszwo] I understand the background of this ticket, so I'd like to confirm what I should
do here.
1. Remove "-rollingUpgrade downgrade" option from namenode startup
2. Update documentations about this option.
Is this right?

> namenode -rollingUpgrade downgrade may finalize a rolling upgrade
> -----------------------------------------------------------------
>
>                 Key: HDFS-7302
>                 URL: https://issues.apache.org/jira/browse/HDFS-7302
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>            Reporter: Tsz Wo Nicholas Sze
>            Assignee: Kai Sasaki
>
> The namenode startup option "-rollingUpgrade downgrade" is originally designed for downgrading
cluster.  However, running "namenode -rollingUpgrade downgrade" with the new software could
result in finalizing the ongoing rolling upgrade.



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