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From "Uma Maheswara Rao G (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2918) HA: Update HA docs to cover dfsadmin
Date Thu, 09 Feb 2012 07:29:01 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2918?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13204326#comment-13204326
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Uma Maheswara Rao G commented on HDFS-2918:
-------------------------------------------

Ok, thanks Eli.
                
> HA: Update HA docs to cover dfsadmin
> ------------------------------------
>
>                 Key: HDFS-2918
>                 URL: https://issues.apache.org/jira/browse/HDFS-2918
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha
>    Affects Versions: HA branch (HDFS-1623)
>            Reporter: Eli Collins
>            Assignee: Eli Collins
>
> dfsadmin currently always uses the first namenode rather than failing over. It should
failover like other clients, unless fs specifies a specific namenode.
> {noformat}
> hadoop-0.24.0-SNAPSHOT $ ./bin/hdfs haadmin -failover nn1 nn2
> Failover from nn1 to nn2 successful
> # nn2 is 8022
> hadoop-0.24.0-SNAPSHOT $ ./bin/hdfs dfsadmin -fs localhost:8022 -safemode enter
> Safe mode is ON
> hadoop-0.24.0-SNAPSHOT $ ./bin/hdfs dfsadmin -safemode get 
> Safe mode is OFF
> hadoop-0.24.0-SNAPSHOT $ ./bin/hdfs dfsadmin -fs localhost:8022 -safemode get
> Safe mode is ON
> {noformat}

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