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https://issues.apache.org/jira/browse/HDFS-4176?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marc Heide updated HDFS-4176:
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Attachment: namenode.jstack4
jstack of standby NameNode trying to get active
> EditLogTailer should call rollEdits with a timeout
> --------------------------------------------------
>
> Key: HDFS-4176
> URL: https://issues.apache.org/jira/browse/HDFS-4176
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: ha, namenode
> Affects Versions: 3.0.0, 2.0.2-alpha
> Reporter: Todd Lipcon
> Attachments: namenode.jstack4
>
>
> When the EditLogTailer thread calls rollEdits() on the active NN via RPC, it
> currently does so without a timeout. So, if the active NN has frozen (but not
> actually crashed), this call can hang forever. This can then potentially
> prevent the standby from becoming active.
> This may actually considered a side effect of HADOOP-6762 -- if the RPC were
> interruptible, that would also fix the issue.
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