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Posted to dev@zookeeper.apache.org by "Flavio Junqueira (JIRA)" <ji...@apache.org> on 2013/02/08 11:41:13 UTC

[jira] [Updated] (ZOOKEEPER-1642) Leader loading database twice

     [ https://issues.apache.org/jira/browse/ZOOKEEPER-1642?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Flavio Junqueira updated ZOOKEEPER-1642:
----------------------------------------

    Fix Version/s: 3.4.6
                   3.5.0
    
> Leader loading database twice
> -----------------------------
>
>                 Key: ZOOKEEPER-1642
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1642
>             Project: ZooKeeper
>          Issue Type: Bug
>            Reporter: Flavio Junqueira
>             Fix For: 3.5.0, 3.4.6
>
>         Attachments: ZOOKEEPER-1642.patch
>
>
> The leader server currently loads the database before running leader election when trying to figure out the zxid it needs to use for the election and again when it starts leading. This is problematic for larger databases so we should remove the redundant load if possible. 
> The code references are:
> # getLastLoggedZxid() in QuorumPeer;
> # loadData() in ZooKeeperServer.

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