[jira] [Commented] (ZOOKEEPER-1044) Allow dynamic changes to roles of a peer

["Rakesh R (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-1044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14007038#comment-14007038 ] 

Rakesh R commented on ZOOKEEPER-1044:
-------------------------------------

Hi [~shralex], From the code I could see reconfig request is changing the learnertype and restarting the leader election. Now voting member can change to non-voting member and vice-versa.

Am I missing anything, Is this still a problem?

> Allow dynamic changes to roles of a peer
> ----------------------------------------
>
>                 Key: ZOOKEEPER-1044
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1044
>             Project: ZooKeeper
>          Issue Type: Sub-task
>          Components: quorum
>    Affects Versions: 3.3.0
>            Reporter: Vishal Kher
>             Fix For: 3.5.0
>
>
> Requirement: functionality that will reconfigure
> a OBSERVER to become a voting member and vice versa.
> Example of usage:
> 1. Maintain the Quorum size without changing the cluster size - in a 5
> node cluster with 2 observers, I decide to decommission a voting
> member. Then, I would like to configure one of my observers to be a
> follower without any down time.
> 2. Added a new server to the cluster that has better resources than
> one of the voting peers. Make the new node as voting peer and the old
> one as observer.
> 3. Reduce the size of voting member for performance reasons.
> Fix to ZOOKEEPER-107 might automatically give us this functionality.
> It will be good to confirm that, and if needed, highlight work
> that might be needed in addition to ZOOKEEPER-107.



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