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From "Hari Mankude (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2914) HA: Standby should not enter safemode when resources are low
Date Tue, 14 Feb 2012 01:27:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13207434#comment-13207434
] 

Hari Mankude commented on HDFS-2914:
------------------------------------


bq. I don't follow this. This seems to only serve to make the test take longer to run, without
providing much benefit. Am I missing something?

We are talking about sleeping for 10s vs changing cluster behavior for the nnresourcetracker
thread to run every 1s and changing the sleep to 2s and then changing the default of the nnresourctracker
thread back to 5s so that it does not distort the remaining portions of the test. Does a 10s
sleep vs 2s sleep make a huge difference from a test usability perspective?
                
> 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: Sub-task
>          Components: ha, name-node
>    Affects Versions: HA branch (HDFS-1623)
>            Reporter: Hari Mankude
>            Assignee: Hari Mankude
>         Attachments: HDFS-2914-HDFS-1623, HDFS-2914-HDFS-1623, HDFS-2914-HDFS-1623.patch,
hdfs-2914
>
>
> 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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