Github user zjffdu commented on the issue:
https://github.com/apache/zeppelin/pull/2272
@felixcheung @Leemoonsoo Any more comments on this ? This PR also address
the issue in ZEPPELIN-2652.
Failed test is flaky test. I will address it in #2422
```
Failed tests:
ZeppelinSparkClusterTest.pySparkTest:291 expected:<ERROR> but
was:<FINISHED>
```
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