[
https://issues.apache.org/jira/browse/YARN-3006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14265782#comment-14265782
]
Akira AJISAKA commented on YARN-3006:
-------------------------------------
--forcemanual option is no-op in failover command, so YARN-2807 looks unrelated.
When attempting failover master node with automatic failover enabled,
* NameNode: Fail if --forcefence or --forceactive option is set. If these
options are not set, do graceful failover.
* ResourceManager: Always throw UnsupportedOperationException.
> Improve the error message when attempting manual failover with auto-failover
> enabled
> ------------------------------------------------------------------------------------
>
> Key: YARN-3006
> URL: https://issues.apache.org/jira/browse/YARN-3006
> Project: Hadoop YARN
> Issue Type: Improvement
> Affects Versions: 2.6.0
> Reporter: Akira AJISAKA
> Assignee: Akira AJISAKA
> Priority: Minor
>
> When executing manual failover with automatic failover enabled,
> UnsupportedOperationException is thrown.
> {code}
> # yarn rmadmin -failover rm1 rm2
> 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:311)
> at org.apache.hadoop.ha.HAAdmin.failover(HAAdmin.java:282)
> at org.apache.hadoop.ha.HAAdmin.runCmd(HAAdmin.java:449)
> at org.apache.hadoop.ha.HAAdmin.run(HAAdmin.java:378)
> at org.apache.hadoop.yarn.client.cli.RMAdminCLI.run(RMAdminCLI.java:482)
> 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:622)
> {code}
> I'm thinking the above message is confusing to users. (Users may think
> whether ZKFC is configured correctly...) The command should output error
> message to stderr instead of throwing Exception.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
