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

["Camille Fournier (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-1642?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13659683#comment-13659683 ] 

Camille Fournier commented on ZOOKEEPER-1642:
---------------------------------------------

Flavio is this ready to go? It looks ok with me, if so I can check it in.
                
> Leader loading database twice
> -----------------------------
>
>                 Key: ZOOKEEPER-1642
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1642
>             Project: ZooKeeper
>          Issue Type: Bug
>            Reporter: Flavio Junqueira
>            Assignee: Flavio Junqueira
>             Fix For: 3.5.0, 3.4.6
>
>         Attachments: ZOOKEEPER-1642.patch, 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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