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Posted to dev@zookeeper.apache.org by "Edward Ribeiro (JIRA)" <ji...@apache.org> on 2012/12/31 22:40:12 UTC

[jira] [Commented] (ZOOKEEPER-1498) Zab1.0 sends NEWLEADER packet twice

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-1498?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13541515#comment-13541515 ] 

Edward Ribeiro commented on ZOOKEEPER-1498:
-------------------------------------------

Hi Camille,

Isn't this issue a duplicate of ZOOKEEPER-1324 ?

PS: I liked your description, it's very good.

                
> Zab1.0 sends NEWLEADER packet twice
> -----------------------------------
>
>                 Key: ZOOKEEPER-1498
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1498
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: server
>    Affects Versions: 3.4.3, 3.5.0
>            Reporter: Camille Fournier
>            Priority: Minor
>
> In pre-Zab1.0, we would process the NEWLEADER packet in registerWithLeader. Now we only process it in syncWithLeader, and in certain circumstances (the first follower of a new leader) it seems like we get 2 of them, which causes 2 snapshots to be taken one right after another. Not sure whether we should ignore taking the snapshot the second time, or not send two packets, or what. 

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