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From "Vinay (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2914) HA: Standby should not enter safemode when resources are low
Date Wed, 16 May 2012 09:01:04 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13276608#comment-13276608

Vinay commented on HDFS-2914:

Hi all,
According to the current patch proposed, there is no necessity of NameNodeResourceMonitor
for standby NN. 

that means StandBy will never go to SafeMode because of resource unavailability. In that case,
we can start this NNRM as activeService instead of commonService. 

Am I missing something..? 
> HA: Standby should not enter safemode when resources are low
> ------------------------------------------------------------
>                 Key: HDFS-2914
>                 URL: https://issues.apache.org/jira/browse/HDFS-2914
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: ha, name-node
>    Affects Versions: 0.24.0
>            Reporter: Hari Mankude
>            Assignee: Hari Mankude
>         Attachments: HDFS-2914-HDFS-1623, HDFS-2914-HDFS-1623, HDFS-2914-HDFS-1623.patch,
> When shared edits dir is bounced, standby NN is put into safemode by the NameNodeResourceMonitor().
However, there is no path for it to exit out of safe mode when shared edits dir reappears.

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