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Date: Thu, 24 Jul 2008 03:27:37 -0700 (PDT)
From: "Flavio Paiva Junqueira (JIRA)" <jira@apache.org>
To: zookeeper-dev@hadoop.apache.org
Subject: [jira] Commented: (ZOOKEEPER-87) Follower does not shut itself down
 if its too far behind the leader.
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    [ https://issues.apache.org/jira/browse/ZOOKEEPER-87?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12616435#action_12616435 ] 

Flavio Paiva Junqueira commented on ZOOKEEPER-87:
-------------------------------------------------

Mahadev, I was thinking that we we could set a maximum capacity to queuedPackets on FollowerHandler, and check the remaining capacity on FollowerHandler.queuePacket() before accepting a new packet. We could then invoke FollowerHandler.shutdown() in the case we reach the capacity. What do you think? If you think this is a good idea, I can create a patch.


> Follower does not shut itself down if its too far behind the leader.
> --------------------------------------------------------------------
>
>                 Key: ZOOKEEPER-87
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-87
>             Project: Zookeeper
>          Issue Type: Bug
>            Reporter: Mahadev konar
>            Assignee: Mahadev konar
>            Priority: Critical
>             Fix For: 3.0.0
>
>
> Currently, the follower if lagging behind keeps sending pings to the leader it will stay alive and will keep getting further and further behind the leader. The follower should shut itself down if it is not able to keep up to the leader within some limit so that gurantee of updates can be made to the clients connected to different servers.

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