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Date: Thu, 6 Jun 2013 20:44:20 +0000 (UTC)
From: "dafu (JIRA)" <jira@apache.org>
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Subject: [jira] [Created] (HELIX-126) StateModel stateTransitionMethod() and
 rest() are not synchronized on the partition
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dafu created HELIX-126:
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             Summary: StateModel stateTransitionMethod() and rest() are not synchronized on the partition
                 Key: HELIX-126
                 URL: https://issues.apache.org/jira/browse/HELIX-126
             Project: Apache Helix
          Issue Type: Bug
            Reporter: dafu


StateModel.reset() is invoked by the ZkEvent thread 
StateModel.stateTransitionMethod() is invoked by thread pool and syn'ed on the state model for that partition

when zk session expiry happens, it's possible that both are running for on the same state model instance

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