Currently automatic failover is not supported by YARN. This is open issue in Yarn Refer : https://issues.apache.org/jira/i#browse/YARN-1177
Thanks & Regards Rohith Sharma K S From: 郝东 [mailto:[email protected]] Sent: 10 February 2015 16:12 To: [email protected] Subject: Can not execute failover for RM HA I just set up ResourceManager HA. Both of the resourcemanagers started correctly. When I killed the active one, the other became active. But when I used the following command to do a manual failover, I got exceptions. I don't know what cause this problem. Could anyone help me ? Many Thanks! Command: yarn rmadmin -failover rm1 rm2 Exceptions: Exception in thread "main" java.lang.UnsupportedOperationException: RMHAServiceTarget doesn't have a corresponding ZKFC address at org.apache.hadoop.yarn.client.RMHAServiceTarget.getZKFCAddress(RMHAServiceTarget.java:51) at org.apache.hadoop.ha.HAServiceTarget.getZKFCProxy(HAServiceTarget.java:94) at org.apache.hadoop.ha.HAAdmin.gracefulFailoverThroughZKFCs(HAAdmin.java:315) at org.apache.hadoop.ha.HAAdmin.failover(HAAdmin.java:286) at org.apache.hadoop.ha.HAAdmin.runCmd(HAAdmin.java:453) at org.apache.hadoop.ha.HAAdmin.run(HAAdmin.java:382) at org.apache.hadoop.yarn.client.cli.RMAdminCLI.run(RMAdminCLI.java:318) at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70) at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84) at org.apache.hadoop.yarn.client.cli.RMAdminCLI.main(RMAdminCLI.java:434)
