[jira] [Commented] (ZOOKEEPER-1552) Enable sync request processor in Observer

["Thawan Kooburat (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-1552?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13650431#comment-13650431 ] 

Thawan Kooburat commented on ZOOKEEPER-1552:
--------------------------------------------

I would say that we can also classify this jira as a bug as well in order to put this into 3.4 branch. This is because many people assumed that the observer is already writing to txnlog. Currently, it only writes a snapshot to disk after the synchronization phase.
                
> Enable sync request processor in Observer
> -----------------------------------------
>
>                 Key: ZOOKEEPER-1552
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1552
>             Project: ZooKeeper
>          Issue Type: Improvement
>          Components: quorum, server
>    Affects Versions: 3.4.3
>            Reporter: Thawan Kooburat
>            Assignee: Thawan Kooburat
>             Fix For: 3.5.0
>
>         Attachments: ZOOKEEPER-1552.patch, ZOOKEEPER-1552.patch, ZOOKEEPER-1552.patch
>
>
> Observer doesn't forward its txns to SyncRequestProcessor. So it never persists the txns onto disk or periodically creates snapshots. This increases the start-up time since it will get the entire snapshot if the observer has be running for a long time. 

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