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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ZOOKEEPER-2879) Adding observers dynamically without server id
Date Mon, 21 Aug 2017 18:26:00 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-2879?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16135548#comment-16135548
] 

ASF GitHub Bot commented on ZOOKEEPER-2879:
-------------------------------------------

GitHub user lvfangmin opened a pull request:

    https://github.com/apache/zookeeper/pull/337

    [ZOOKEEPER-2879] Adding observers dynamically without server id

    

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/lvfangmin/zookeeper ZOOKEEPER-2879

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/zookeeper/pull/337.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #337
    
----
commit 164ec347346126769d931433f3277ffe80227097
Author: Fangmin Lyu <allenlyu@fb.com>
Date:   2017-08-21T18:05:46Z

    [ZOOKEEPER-2879] Adding observers dynamically without server id

----


> Adding observers dynamically without server id
> ----------------------------------------------
>
>                 Key: ZOOKEEPER-2879
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2879
>             Project: ZooKeeper
>          Issue Type: Improvement
>          Components: quorum
>    Affects Versions: 3.6.0
>            Reporter: Fangmin Lv
>            Assignee: Fangmin Lv
>
> Dynamic config requires observer has unique server id, which means we cannot simply add
observer with dynamic server id -1. For large observer cluster, it's much more easier to add
observer without unique server id if it doesn't need to be promoted to participant. Also,
it will make dynamic config more efficient, we don't need to store and send the long list
of observers during re-config.



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