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https://issues.apache.org/jira/browse/HDFS-6089?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13931048#comment-13931048
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Jing Zhao commented on HDFS-6089:
---------------------------------
Since in active NN we already have a NameNodeEditLogRoller thread triggering
the editlog roll, I guess the standby NN doesn't need to trigger the active
namenode to roll the editlog.
> Standby NN while transitioning to active throws a connection refused error
> when the prior active NN process is suspended
> ------------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-6089
> URL: https://issues.apache.org/jira/browse/HDFS-6089
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: ha
> Affects Versions: 2.4.0
> Reporter: Arpit Gupta
> Assignee: Jing Zhao
>
> The following scenario was tested:
> * Determine Active NN and suspend the process (kill -19)
> * Wait about 60s to let the standby transition to active
> * Get the service state for nn1 and nn2 and make sure nn2 has transitioned to
> active.
> What was noticed that some times the call to get the service state of nn2 got
> a socket time out exception.
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