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https://issues.apache.org/jira/browse/TRAFODION-2588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15964105#comment-15964105
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ASF GitHub Bot commented on TRAFODION-2588:
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GitHub user mkby opened a pull request:
https://github.com/apache/incubator-trafodion/pull/1061
[TRAFODION-2588] monitor failed to start if part of zookeeper server is down
retry 3 times when connecting to zookeeper.
@narendragoyal @zcorrea please review.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/mkby/incubator-trafodion 2588
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-trafodion/pull/1061.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1061
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commit 18ad65a99275b44a3f68db01ca5385665a2e5195
Author: Eason <[email protected]>
Date: 2017-04-11T09:58:32Z
[TRAFODION-2588] monitor failed to start if part of zookeeper server is down
----
> monitor failed to start if part of zookeeper server is down
> -----------------------------------------------------------
>
> Key: TRAFODION-2588
> URL: https://issues.apache.org/jira/browse/TRAFODION-2588
> Project: Apache Trafodion
> Issue Type: Bug
> Components: foundation
> Reporter: Eason Zhang
> Assignee: Eason Zhang
>
> monitor gets zookpper node list from env $ZOOKEEPER_NODES. If one of the
> zookeeper server in this node list is down, monitor will not start with
> 'ZCONNECTIONLOSS' error:
> 2017-04-11 17:15:49,351, ERROR, ZOO, Node Number: 4294967295,, PIN: 21106 ,
> Process Name: zooclient,,, TID: 21106, Message ID: 101370401,
> [CZClient::MakeClusterZNodes], zoo_exists() failed with error ZCONNECTIONLOSS
> That is because zookeeper c client randomly picks up a zk server to connect
> with based on its own node selection algorithm. So the simple solution for
> monitor is that we do a retry when connection failed, let zookeeper c client
> to pick up another server from the list.
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