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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:
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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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