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https://issues.apache.org/jira/browse/HDFS-2823?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aaron T. Myers resolved HDFS-2823.
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Resolution: Invalid
I forgot that HDFS-2737 hasn't been committed yet, and this bug is only present
in the latest patch for that JIRA. Resolving this and will post an updated
patch on HDFS-2737.
> HA: Transition to active can cause NN deadlock
> ----------------------------------------------
>
> Key: HDFS-2823
> URL: https://issues.apache.org/jira/browse/HDFS-2823
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha, name-node
> Affects Versions: HA branch (HDFS-1623)
> Reporter: Aaron T. Myers
> Assignee: Aaron T. Myers
> Priority: Blocker
>
> On transition to active, we have to take the FSNS write lock. In
> {{EditLogTailer#stop}}, we interrupt the edit log tailer thread and then join
> on that thread. When tailing edits, the edit log tailer thread acquires the
> FSNS write lock interruptibly, precisely so that we avoid deadlocks on
> transition to active. However, the edit log tailer thread now also triggers
> edit log rolls. Several places in {{ipc.Client}} catch and ignore
> {{InterruptedException}}, and in so doing may cause the {{Thread#interrupt}}
> call to be missed by the edit log tailer thread.
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