[GitHub] zeppelin issue #2937: ZEPPELIN-3401. Deadlock while restarting interpreter

[zjffdu]

Github user zjffdu commented on the issue:

    https://github.com/apache/zeppelin/pull/2937
  
    It is just used in 2 places, synchronized should be fine. ReadWriteLock is 
more suitable for the scenario of many reads & a few write


---