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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6004) Change DFSAdmin for rolling upgrade commands
Date Mon, 24 Feb 2014 21:19:20 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6004?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13910828#comment-13910828
] 

Arpit Agarwal commented on HDFS-6004:
-------------------------------------

Hi Nicholas, when {{startRollingUpgradeInternal}} returns the rollback image has been saved
so should {{rollingUpgradeInfo#createdRollbackImages}} be initialized to true?

> Change DFSAdmin for rolling upgrade commands
> --------------------------------------------
>
>                 Key: HDFS-6004
>                 URL: https://issues.apache.org/jira/browse/HDFS-6004
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: hdfs-client
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>         Attachments: h6004_20140224.patch, h6004_20140224b.patch
>
>
> When rolling upgrade is initiated, a image is created for rollback.  We propose the following
changes for the DFSAdmin for rolling upgrade commands:
> - change "dfsadmin -rollingUpgrade start" to "dfsadmin -rollingUpgrade prepare";
> - add information for the rollback image to "dfsadmin -rollingUpgrade query".



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