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From "Paul Yang (JIRA)" <>
Subject [jira] [Created] (HIVE-3000) Potential infinite loop / log spew in ZookeeperHiveLockManager
Date Thu, 03 May 2012 00:53:48 GMT
Paul Yang created HIVE-3000:

             Summary: Potential infinite loop / log spew in ZookeeperHiveLockManager
                 Key: HIVE-3000
             Project: Hive
          Issue Type: Bug
          Components: Locking
    Affects Versions: 0.9.0
            Reporter: Paul Yang

See ZookeeperHiveLockManger.lock()

If Zookeeper is in a bad state, it's possible to get an exception (e.g. org.apache.zookeeper.KeeperException$SessionExpiredException)
when we call lockPrimitive(). There is a bug in the exception handler where the loop does
not exit because the break in the switch statement gets out the switch, not the do..while
loop. Because tryNum was not incremented due to the exception, lockPrimitive() will be called
in an infinite loop, as fast as possible. Since the exception is printed for each call, Hive
will produce significant log spew.

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