Shulou(Shulou.com)06/03 Report--

A hadoop cluster was built yesterday. Today, it is found that the zkfc services of two namenode cannot work. The following information is found in the zkfc log:

Unable to start failover controller. Parent znode does not exist.

. / bin/zkCli.sh-server master1

Ls /

Do not see / hadoop-ha

Solution:

Enter the hadoop namenode server

. / bin/hdfs zkfc-formatZK

Start the zkfc service on both namenode nodes

. / sbin/hadoop-daemon.sh start zkfc

View master1 node status

. / bin/hdfs haadmin-getServiceState master1

Active

Actice namenode node transfer

. / bin/hdfs haadmin-failover master1 master2

Check to see if transfer

. / bin/hdfs haadmin-getServiceState master1

Standby

. / bin/hdfs haadmin-getServiceState master2

Active

Reference:

Https://blog.csdn.net/houzhizhen/article/details/44099825

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