hadoop-zookeeper-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Ivan Kelly (JIRA)" <j...@apache.org>
Subject [jira] Commented: (ZOOKEEPER-822) Leader election taking a long time to complete
Date Fri, 06 Aug 2010 15:30:15 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12896063#action_12896063
] 

Ivan Kelly commented on ZOOKEEPER-822:
--------------------------------------

They logs were of some help, but I don't understand what's happening. I looks like multiple
nodes are claiming leadership at the same time, but that can't be right.

The FLE changes won't fix it, but they do log more information, so they may make it easier
to see what is happening.

> Leader election taking a long time  to complete
> -----------------------------------------------
>
>                 Key: ZOOKEEPER-822
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-822
>             Project: Zookeeper
>          Issue Type: Bug
>          Components: quorum
>    Affects Versions: 3.3.0
>            Reporter: Vishal K
>            Priority: Blocker
>         Attachments: 822.tar.gz, test_zookeeper_1.log, test_zookeeper_2.log, zk_leader_election.tar.gz
>
>
> Created a 3 node cluster.
> 1 Fail the ZK leader
> 2. Let leader election finish. Restart the leader and let it join the 
> 3. Repeat 
> After a few rounds leader election takes anywhere 25- 60 seconds to finish. Note- we
didn't have any ZK clients and no new znodes were created.
> zoo.cfg is shown below:
> #Mon Jul 19 12:15:10 UTC 2010
> server.1=192.168.4.12\:2888\:3888
> server.0=192.168.4.11\:2888\:3888
> clientPort=2181
> dataDir=/var/zookeeper
> syncLimit=2
> server.2=192.168.4.13\:2888\:3888
> initLimit=5
> tickTime=2000
> I have attached logs from two nodes that took a long time to form the cluster after failing
the leader. The leader was down anyways so logs from that node shouldn't matter.
> Look for "START HERE". Logs after that point should be of our interest.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message