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From "Uma Maheswara Rao G (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2720) HA : TestStandbyIsHot is failing while copying in_use.lock file from NN1 to NN2
Date Fri, 23 Dec 2011 10:50:30 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13175375#comment-13175375
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Uma Maheswara Rao G commented on HDFS-2720:
-------------------------------------------

One way to fix this is, we can just skip the in_use.lock file from copying the NamespaceDirs.
Other way could be, manage the clusterID to be insync between active and format all as initial
as real clusters does.

@Todd, i want to know how we planned to sync the cluster id between active and standby nodes
here.
                
> HA : TestStandbyIsHot is failing while copying in_use.lock file from NN1 to NN2 
> --------------------------------------------------------------------------------
>
>                 Key: HDFS-2720
>                 URL: https://issues.apache.org/jira/browse/HDFS-2720
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha, test
>    Affects Versions: HA branch (HDFS-1623)
>            Reporter: Uma Maheswara Rao G
>            Assignee: Uma Maheswara Rao G
>
> To maintain the clusterID same , we are copying the namespaceDirs from 1st NN to other
NNs.
> While copying this files, in_use.lock file may not allow to copy in all the OSs since
it has aquired the lock on it. 

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