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Posted to common-issues@hadoop.apache.org by "Eli Collins (Moved) (JIRA)" <ji...@apache.org> on 2012/03/25 20:47:27 UTC

[jira] [Moved] (HADOOP-8208) Disallow self failover

     [ https://issues.apache.org/jira/browse/HADOOP-8208?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eli Collins moved HDFS-3145 to HADOOP-8208:
-------------------------------------------

          Component/s:     (was: ha)
                       ha
     Target Version/s: 0.23.3  (was: 0.23.3)
    Affects Version/s:     (was: 0.23.2)
                  Key: HADOOP-8208  (was: HDFS-3145)
              Project: Hadoop Common  (was: Hadoop HDFS)
    
> Disallow self failover
> ----------------------
>
>                 Key: HADOOP-8208
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8208
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: ha
>            Reporter: Eli Collins
>            Assignee: Eli Collins
>         Attachments: hdfs-3145.txt
>
>
> It is currently possible for users to make a standby NameNode failover to itself and become active. We shouldn't allow this to happen in case operators mistype and miss the fact that there are now two active NNs.
> {noformat}
> bash-4.1$ hdfs haadmin -ns ha-nn-uri -failover nn2 nn2
> Failover from nn2 to nn2 successful
> {noformat}
> After the failover above, nn2 will be active.

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