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https://issues.apache.org/jira/browse/YARN-7592?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16605092#comment-16605092
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Subru Krishnan commented on YARN-7592:
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[~bibinchundatt]/[~jira.shegalov], I have tested multiple times with a similar 
setup (for 2.9 release) and never faced any issues.

 

FYI the FEDERATION_FAILOVER_ENABLED is automatically set by 
{{FederationProxyProviderUtil}} if HA is enabled as you can see 
[here|https://github.com/apache/hadoop/blob/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/java/org/apache/hadoop/yarn/server/federation/failover/FederationProxyProviderUtil.java#L128].

> yarn.federation.failover.enabled missing in yarn-default.xml
> ------------------------------------------------------------
>
>                 Key: YARN-7592
>                 URL: https://issues.apache.org/jira/browse/YARN-7592
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: federation
>    Affects Versions: 3.0.0-beta1
>            Reporter: Gera Shegalov
>            Priority: Major
>
> yarn.federation.failover.enabled should be documented in yarn-default.xml. I 
> am also not sure why it should be true by default and force the HA retry 
> policy in {{RMProxy#createRMProxy}}



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