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From "Qiang Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (RANGER-1285) Ranger-Admin support storm HA, support the list of stormUIs when creating storm service.
Date Wed, 04 Jan 2017 05:56:58 GMT

    [ https://issues.apache.org/jira/browse/RANGER-1285?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15797275#comment-15797275
] 

Qiang Zhang commented on RANGER-1285:
-------------------------------------

[~rmani] I think it's worth it.
When Storm is set to HA mode, we usually start the nimbus and UI processes on the same host,
which means not only nimbus is HA, but also Storm UI is HA.
Normally if the Storm cluster is running well, one Storm UI process will be enough, 
but if the Storm UI process is down, there is no Storm UI service for Storm cluster,
and Ranger-Admin would not be able to get Storm Topology by only one Storm UI URL,
So based on the stability of the application and consistent with the idea of HA, 
we think at least two Storm UI process is reasonable.

> Ranger-Admin support storm HA, support the list of stormUIs when creating storm service.
> ----------------------------------------------------------------------------------------
>
>                 Key: RANGER-1285
>                 URL: https://issues.apache.org/jira/browse/RANGER-1285
>             Project: Ranger
>          Issue Type: New Feature
>          Components: admin
>            Reporter: Qiang Zhang
>            Assignee: Qiang Zhang
>            Priority: Minor
>              Labels: features
>         Attachments: 0001-RANGER-1285-ranger-admin-support-storm-HA.patch, stormHAconfig.jpg,
stormTopologyAutocomplete.jpg
>
>   Original Estimate: 72h
>  Remaining Estimate: 72h
>
> In Ranger-Admin, when creating storm service, there is configuration "Nimbus URL" for
storm UI url, 
> if storm is in HA mode, there is more than one storm UI, 
> to make "Nimbus URL" support the list of stormUIs, so if one storm UI is out of service,

> Ranger-Admin could try to find which one is active and use it for the Lookup / Test Connection
in Ranger.



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