Github user Leemoonsoo commented on the issue: https://github.com/apache/zeppelin/pull/1838 multiple ci test profile fails with the same error. ``` 09:51:15,163 ERROR org.apache.zeppelin.interpreter.remote.RemoteInterpreterEventPoller:245 - Can't handle event RemoteInterpreterEvent(type:OUTPUT_UPDATE_ALL, data:{"noteId":"2C75F1GM3","paragraphId":"20170104-095114_1076613332","messages":[]}) java.lang.NullPointerException at org.apache.zeppelin.interpreter.remote.RemoteInterpreterEventPoller.run(RemoteInterpreterEventPoller.java:186) 09:51:15,226 INFO org.apache.zeppelin.interpreter.InterpreterGroup:145 - Close interpreter group 2C8ACKHEJ:shared_process 09:51:15,226 INFO org.apache.zeppelin.interpreter.remote.RemoteInterpreterProcess:121 - shutdown interpreter process 09:51:16,226 ERROR org.apache.zeppelin.interpreter.remote.AppendOutputRunner:68 - Wait for OutputBuffer queue interrupted: null 09:51:17,657 INFO org.apache.zeppelin.interpreter.remote.RemoteInterpreterProcess:131 - Exception in RemoteInterpreterProcess while synchronized dereference, can safely ignore exception while client.shutdown() may terminates remote process 09:51:17,660 INFO org.apache.zeppelin.interpreter.remote.RemoteInterpreterManagedProcess:164 - Interpreter process exited 0 No output has been received in the last 10m0s, this potentially indicates a stalled build or something wrong with the build itself. Check the details on how to adjust your build configuration on: https://docs.travis-ci.com/user/common-build-problems/#Build-times-out-because-no-output-was-received The build has been terminated ``` @cloverhearts could you take a look?
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