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Posted to dev@zookeeper.apache.org by "maoling (JIRA)" <ji...@apache.org> on 2019/02/23 10:12:00 UTC

[jira] [Commented] (ZOOKEEPER-2504) Enforce that server ids are unique in a cluster

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-2504?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16775849#comment-16775849 ] 

maoling commented on ZOOKEEPER-2504:
------------------------------------

ping [~dbenediktson] and [~hanm]. Can we move on?

> Enforce that server ids are unique in a cluster
> -----------------------------------------------
>
>                 Key: ZOOKEEPER-2504
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2504
>             Project: ZooKeeper
>          Issue Type: Bug
>            Reporter: Dan Benediktson
>            Assignee: Michael Han
>            Priority: Major
>         Attachments: ZOOKEEPER-2504.patch
>
>
> The leader will happily accept connections from learners that have the same server id (i.e., due to misconfiguration). This can lead to various issues including non-unique session_ids being generated by these servers.
> The leader can enforce that all learners come in with unique server IDs; if a learner attempts to connect with an id that is already in use, it should be denied.



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