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https://issues.apache.org/jira/browse/HDFS-7388?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Junping Du updated HDFS-7388:
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Target Version/s: (was: 2.8.0)
> Improve the log for HA failover
> -------------------------------
>
> Key: HDFS-7388
> URL: https://issues.apache.org/jira/browse/HDFS-7388
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha
> Reporter: Jing Zhao
> Assignee: Jing Zhao
>
> Currently to debug an issue during the NN HA failover (with automatic
> failover setup), we usually need to check log from all the NN and ZKFC
> daemons to figure out what triggered the failover. Possible reasons include
> NN health issue, connection issues between zkfc and NN, connection issues
> between zkfc and ZK, and manual op started by admin. It will be helpful to
> improve the log in NN and ZKFC and add more information to make the debug
> easier.
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