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From "Stephen Yuan Jiang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-13733) failed MiniZooKeeperCluster startup not shut down ZK servers
Date Thu, 21 May 2015 01:44:00 GMT
Stephen Yuan Jiang created HBASE-13733:
------------------------------------------

             Summary: failed MiniZooKeeperCluster startup not shut down ZK servers
                 Key: HBASE-13733
                 URL: https://issues.apache.org/jira/browse/HBASE-13733
             Project: HBase
          Issue Type: Bug
          Components: Zookeeper
    Affects Versions: 1.1.0, 2.0.0, 1.2.0
            Reporter: Stephen Yuan Jiang
            Assignee: Stephen Yuan Jiang


MiniZooKeeperCluster#startup() starts servers one-by-one, if everything is good, it would
declare success of start:

{code}
  public int startup(File baseDir, int numZooKeeperServers) 
    ...
    // running all the ZK servers
    for (int i = 0; i < numZooKeeperServers; i++) {
    ...===> could throw exception in the loop and end the startup
      // Start up this ZK server
      standaloneServerFactory.startup(server);
      ...
      standaloneServerFactoryList.add(standaloneServerFactory);
      zooKeeperServers.add(server);
    }
   ...
    started = true;
    ...
  }

{code}

However, if exception throws in the middle of start up (eg. some servers already started),
the MiniZooKeeperCluster#shutdown() would not shut down them and clean up resources.  

{code}
  public void shutdown() throws IOException {
    if (!started) {
      return;
    }
    ...
  }
{code}



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