Github user bzz commented on the issue:
https://github.com/apache/zeppelin/pull/1170
Added babupe/zeppelin#2
After configuring credentials I got strange behavior: query `show tables`
results is `ERROR` paragraph status with
- no output in GUI
- and nothing in the logs

```
INFO [2016-07-29 15:39:49,759] ({pool-2-thread-2}
SchedulerFactory.java[jobStarted]:131) - Job remoteInterpretJob_1469774389758
started by scheduler org.apache.zeppelin.bigquery.BigQueryInterpreter745463803
INFO [2016-07-29 15:39:49,759] ({pool-2-thread-2}
BigQueryInterpreter.java[interpret]:288) - Run SQL command 'show tables'
INFO [2016-07-29 15:39:50,531] ({pool-2-thread-2}
SchedulerFactory.java[jobFinished]:137) - Job remoteInterpretJob_1469774389758
finished by scheduler org.apache.zeppelin.bigquery.BigQueryInterpreter745463803
```
Which is a bit frustrating experience, since it is `ERROR` but user does
not know why.
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