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https://issues.apache.org/jira/browse/YARN-3893?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14711164#comment-14711164
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Varun Saxena commented on YARN-3893:
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Moreover, the fail fast configuration doesnt quite work as expected here. If
capacity scheduler configuration is wrong, initialization will again fail and
JVM will exit, which in essence is exactly same as the other case. We can
handle fail fast as true case same way as earlier IMO.
The reason it works in the test(JVM does not exit) is that you have passed
CapacitySchedulerConfiguration object to MockRM. As
CapacitySchedulerConfiguration is not instanceof YarnConfiguration, this will
lead to a new YarnConfiguration object being created and passed to
ResourceManager.
When you are changing configuration in test and set queue capacity to 200, it
is not reflecting in the Configuration object in ResourceManager class. That is
why JVM does not exit when we transition to standby.
> Both RM in active state when Admin#transitionToActive failure from refeshAll()
> ------------------------------------------------------------------------------
>
> Key: YARN-3893
> URL: https://issues.apache.org/jira/browse/YARN-3893
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Affects Versions: 2.7.1
> Reporter: Bibin A Chundatt
> Assignee: Bibin A Chundatt
> Priority: Critical
> Attachments: 0001-YARN-3893.patch, 0002-YARN-3893.patch,
> 0003-YARN-3893.patch, 0004-YARN-3893.patch, 0005-YARN-3893.patch,
> yarn-site.xml
>
>
> Cases that can cause this.
> # Capacity scheduler xml is wrongly configured during switch
> # Refresh ACL failure due to configuration
> # Refresh User group failure due to configuration
> Continuously both RM will try to be active
> {code}
> dsperf@host-10-128:/opt/bibin/dsperf/OPENSOURCE_3_0/install/hadoop/resourcemanager/bin>
> ./yarn rmadmin -getServiceState rm1
> 15/07/07 19:08:10 WARN util.NativeCodeLoader: Unable to load native-hadoop
> library for your platform... using builtin-java classes where applicable
> active
> dsperf@host-128:/opt/bibin/dsperf/OPENSOURCE_3_0/install/hadoop/resourcemanager/bin>
> ./yarn rmadmin -getServiceState rm2
> 15/07/07 19:08:12 WARN util.NativeCodeLoader: Unable to load native-hadoop
> library for your platform... using builtin-java classes where applicable
> active
> {code}
> # Both Web UI active
> # Status shown as active for both RM
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