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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