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https://issues.apache.org/jira/browse/AMBARI-12910?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14724348#comment-14724348
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Yusaku Sako commented on AMBARI-12910:
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UT failures reported above are unrelated to this commit.
> Ambari Views Framework - need support for accessing RM running under HA
> -----------------------------------------------------------------------
>
> Key: AMBARI-12910
> URL: https://issues.apache.org/jira/browse/AMBARI-12910
> Project: Ambari
> Issue Type: Bug
> Components: ambari-views
> Affects Versions: 2.1.0
> Reporter: DIPAYAN BHOWMICK
> Assignee: DIPAYAN BHOWMICK
> Fix For: 2.1.2
>
> Attachments: AMBARI-12910_branch-2.1.patch
>
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> Currently all views like the Tez view, YARN cluster view and YARN admin views
> that need to access YARN RMs running HA don't handle this scenario correctly.
> We need support in the views framework to enable this (note, if both RMs are
> running the RMs handle redirecting from the standby RM to the active one, but
> it has to be tested to work with the Ambari proxy. If one of the RMs is
> actually down, things are broken today).
> The Hive view might also need this.
> The following changes need to be considered:
> 1. The property that used to specify the RM location has to be extended to
> take a list of RM locations
> 2. The Ambari proxy has to cycle through the locations until it find one that
> works
> 3. For auto-created view instances, based on the cluster configuration, the
> multi-RM property in (1) has to be set correctly without user intervention
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