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From "Jordan Zimmerman (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (CURATOR-49) LeaderSelector has no response when delete the leader node by other clients
Date Tue, 30 Jul 2013 06:15:50 GMT

     [ https://issues.apache.org/jira/browse/CURATOR-49?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jordan Zimmerman closed CURATOR-49.
-----------------------------------

    Resolution: Not A Problem
    
> LeaderSelector has no response when delete the leader node by other clients
> ---------------------------------------------------------------------------
>
>                 Key: CURATOR-49
>                 URL: https://issues.apache.org/jira/browse/CURATOR-49
>             Project: Apache Curator
>          Issue Type: Bug
>          Components: Recipes
>    Affects Versions: 2.1.0-incubating
>         Environment: curator-recipes 2.1.0-incubating and  zookeeper 3.4.5
>            Reporter: Ding Jinqiang
>
> If I setup a normal LeaderSelection with two participants, and as expected one of them
becomes the leader. But when I delete the leader node manually by other clients, the other
leaderSelector becomes the leader normally. But the leaderSelector, which is the previous
leader, does not receive any notification in the LeaderSelectorListener. 
> Well, my question is, is this normal, or I just missed something? 
> Sample code may like this:
> 		RetryPolicy retryPolicy = new ExponentialBackoffRetry(1000, 1);
> 		client = CuratorFrameworkFactory.newClient(Config.getInstance().getServerConnectString(),
> 				retryPolicy);
> 		client.start();
>  		LeaderSelectorListener listener = new LeaderSelectorListener() {
> 			@Override
> 			public void takeLeadership(CuratorFramework client) throws Exception {
> 				logger.info("takeLeadership, thread id:"+Thread.currentThread().getId());
>  				Thread.sleep(Long.MAX_VALUE);
> 			}
> 			@Override
> 			public void stateChanged(CuratorFramework client, ConnectionState newState) {
> 				logger.info("Zookeeper connection stateChanged, new state is " + newState);
> 			}
> 		};
> 		selector = new LeaderSelector(client, Config.getInstance().getEclectPath());
> 		selector.autoRequeue();
> 		selector.start();
>  

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