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https://issues.apache.org/jira/browse/CURATOR-125?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jordan Zimmerman updated CURATOR-125:
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Comment: was deleted
(was: GitHub user dragonsinth opened a pull request:
https://github.com/apache/curator/pull/22
CURATOR-125: Fix race condition in CuratorFrameworkImpl.close()
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dragonsinth/curator CURATOR-125
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/curator/pull/22.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 #22
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commit e3b93f221b2a43c93d71a0f51510fc5f83b51968
Author: Scott Blum <[email protected]>
Date: 2014-07-28T18:10:37Z
CURATOR-125: Fix race condition in CuratorFrameworkImpl.close()
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)
> ConnectionStateListener is confused by READ_ONLY state
> ------------------------------------------------------
>
> Key: CURATOR-125
> URL: https://issues.apache.org/jira/browse/CURATOR-125
> Project: Apache Curator
> Issue Type: Bug
> Components: Client
> Affects Versions: 2.6.0
> Environment: Ubuntu 12.04
> 3 ZK with readonlymode.enabled
> Reporter: Benjamin Jaton
> Attachments: Test.java
>
>
> To reproduce:
> - have a 3 nodes ZK ensemble with readonlymode.enabled
> - shut down 2 of the 3 ZK servers ( we start in read only mode)
> Then create a piece of code (see Test.java attached):
> - a curator client (keep the timeout reasonably short)
> - a NodeCache listener on '/'
> - a separate ZooKeeper client
> -> the connection goes into READ_ONLY/ConnectedReadOnly as expected
> - start another ZooKeeper
> -> the connection goes into SUSPENDED/Disconnected, then
> CONNECTED/SyncConnected, fine.
> - stop one of the 2 ZooKeeper alive
> -> the connection goes:
> ZOOKEEPER STATE: Disconnected
> CURATOR STATE: SUSPENDED
> ZOOKEEPER STATE: ConnectedReadOnly
> CURATOR STATE: READ_ONLY
> CURATOR STATE: SUSPENDED
> CURATOR STATE: READ_ONLY
> CURATOR STATE: SUSPENDED
> CURATOR STATE: READ_ONLY
> So it's flaky. Sometimes it doesn't switch back and forth, sometimes twice
> only, sometimes a lot more.
> Depending on the timeout on the client, it might take more time to appear.
> I attached a sample code that would reproduce it in 20-30 seconds.
> Note that the problem may ultimately be on the ZooKeeper side but at that
> point I just don't know.
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