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https://issues.apache.org/jira/browse/HDFS-15772?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Srinivasu Majeti updated HDFS-15772:
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Summary: Namenode failover not happened when keytabs removed (was:
Namenode not failover )
> Namenode failover not happened when keytabs removed
> ---------------------------------------------------
>
> Key: HDFS-15772
> URL: https://issues.apache.org/jira/browse/HDFS-15772
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: configuration, hdfs
> Affects Versions: 3.1.4
> Environment: HDP 3.1.4 with Ambari 2.7.4
> Reporter: Sathish Kumar
> Priority: Major
>
> When the directory /etc/secruity/keytabs folder removed on HDP 3.1.4 due to
> human error, the NN service down and it didn't failover to standby node in HA
> configuration. This issue can be reproduced simply by removing the
> /etc/security/keytabs folder. It looks the namenode didn't failover due to
> ZKFC as HA is controlled by ZKFC and it used its old connection and could not
> detect any loss of keytabs which prevented the failover. After restarting the
> ZKFC on the active namenode its fails to establish connection as it couldn't
> find the keytabs and eventually fails over to standby node which becomes
> active nn.
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