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Date: Tue, 10 Jan 2012 21:50:41 +0000 (UTC)
From: "Hari Mankude (Commented) (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HDFS-2753) Standby namenode stuck in safemode
 during a failover
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    [ https://issues.apache.org/jira/browse/HDFS-2753?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13183612#comment-13183612 ] 

Hari Mankude commented on HDFS-2753:
------------------------------------

Todd,

Looking at the new test in the patch, I am not sure as to how this is going to bring out the race. The race happens when a blockreceived happens before the first block report when NN is in safemode. I don't see test guarantee this sequence of operations.
                
> Standby namenode stuck in safemode during a failover
> ----------------------------------------------------
>
>                 Key: HDFS-2753
>                 URL: https://issues.apache.org/jira/browse/HDFS-2753
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha, name-node
>    Affects Versions: HA branch (HDFS-1623)
>            Reporter: Hari Mankude
>            Assignee: Hari Mankude
>         Attachments: HDFS-2753.patch, hdfs-2753.txt
>
>
> Write traffic initiated from the client. Manual failover is done by killing NN and converting a  different standby to active. NN is restarted as standby. The restarted standby stays in safemode forever. More information in the description.

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