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https://issues.apache.org/jira/browse/ZOOKEEPER-2614?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16106451#comment-16106451
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ASF GitHub Bot commented on ZOOKEEPER-2614:
-------------------------------------------
GitHub user tschuettel opened a pull request:
https://github.com/apache/zookeeper/pull/320
ZOOKEEPER-2614 Port ZOOKEEPER-1576 to branch 3.4
This is a backport of ZOOKEEPER-1576 to the 3.4-line.
When running Zookeeper as an ensemble in a dynamic environment such as
Kubernetes, the DNS entry of a Zookeeper pod is apparently instantly
purged as one of the nodes goes down. This leads to an UnknownHostException
when interacting with the cluster, even though a healthy majority of nodes
is still working.
This behavior is also observed in a firewall situation as described in
ZOOOKEEPER-1576.
This fix catches and logs the UnkownHostException and continues trying the
next node.
Thanks to Vishal Khandelwal for providing the patch.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/DaimlerTSS/zookeeper ZOOKEEPER-2614
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/zookeeper/pull/320.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 #320
----
commit 67eff1c9984c0081cd36d4f978fcce642362b4b3
Author: Thomas Schüttel <[email protected]>
Date: 2017-07-30T10:50:23Z
ZOOKEEPER-2614 Port ZOOKEEPER-1576 to branch 3.4
This is a backport of ZOOKEEPER-1576 to the 3.4-line.
When running Zookeeper as an ensemble in a dynamic environment such as
Kubernetes, the DNS entry of a Zookeeper pod is apparently instantly
purged as one of the nodes goes down. This leads to an UnknownHostException
when interacting with the cluster, even though a healthy majority of nodes
is still working.
This behavior is also observed in a firewall situation as described in
ZOOOKEEPER-1576.
This fix catches and logs the UnkownHostException and continues trying the
next node.
Thanks to Vishal Khandelwal for providing the patch.
----
> Port ZOOKEEPER-1576 to branch3.4
> --------------------------------
>
> Key: ZOOKEEPER-2614
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2614
> Project: ZooKeeper
> Issue Type: Bug
> Affects Versions: 3.4.9
> Reporter: Vishal Khandelwal
> Assignee: Vishal Khandelwal
> Fix For: 3.4.11
>
> Attachments: ZOOKEEPER-2614.branch-3.4.00.patch
>
>
> ZOOKEEPER-1576 handles UnknownHostException and it good to have this change
> for 3.4 branch as well. Porting the changes to 3.4 after resolving the
> conflicts
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