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From "James Clampffer (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-10409) libhdfs++: Something is holding connection_state_lock in RpcConnectionImpl destructor
Date Mon, 16 May 2016 12:49:12 GMT
James Clampffer created HDFS-10409:
--------------------------------------

             Summary: libhdfs++: Something is holding connection_state_lock in RpcConnectionImpl
destructor
                 Key: HDFS-10409
                 URL: https://issues.apache.org/jira/browse/HDFS-10409
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: James Clampffer


The destructor to RpcConnectionImpl grabs a lock using a std::lock_guard<>.  

It turns out something is already holding the lock when this happens.  Best bet is something
that looks like:

{code}
void SomeFunctionThatShouldntTakeLock(){
  std::lock_guard<std::mutex> bad(connection_state_lock_)
  conn_.reset(); //conn is a shared_ptr to RpcConnectionImpl
}
{code}




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