Github user gatorsmile commented on the issue:
https://github.com/apache/spark/pull/16290
I checked the most two recent failed test cases in Jenkins. They are not
related to the changes in the PR.
In the local environment, I can reproduce the error you mentioned above.
```
[info] 2016-12-18 20:47:23.328 - stdout> path1:
file:/Users/xiaoli/IdeaProjects/sparkDelivery/bin/spark-warehouse
[info] 2016-12-18 20:47:23.328 - stdout> path2:
file:/Users/xiaoli/IdeaProjects/sparkDelivery/spark-warehouse/
```
The location of default database is still pointing to the original value of
`hive.metastore.warehouse.dir` or `spark.sql.warehouse.dir` that was set in the
previous test case or our previous local spark job. Ideally, our test suite
should directly connect to Derby and drop the default database. Let me do more
search.
Also cc @yhuai
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