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How to force Namenode failover in HA

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author-rank ahallam
Expert Contributor

Created on ‎08-07-2017 10:02 AM

If you would like NN1 to be active namenode, you can do it by stopping ZKFC of NN2 via ambari.

After ~10 sec the failover should happend the the other NN become the active

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Re: How to force Namenode failover in HA

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author-rank abhijth8
Explorer

Created on ‎08-09-2017 06:18 PM

Doing this process may lead to bad things in a production cluster. The right way would be.

hdfs haadmin -failover nn1 nn2

The NN UI shows the service tags

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‎08-07-2017 10:02 AM
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