Github user gatorsmile commented on the pull request: https://github.com/apache/spark/pull/12722#issuecomment-214960786 To save your time, I hit the same errors. Want to share what I found. One test case called `SQLConf.clear()` and cleaned all the configurations. When we reloading the conf, we did not load the Hive-related configurations. It might not be the best way to fix the issue. Below is what I changed. Hopefully, it helps you in this PR. Thanks! https://github.com/apache/spark/pull/12081/commits/1da261a395bd799b6942e04fa142372a5bee3a8c
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