captainzmc opened a new pull request #200: [LIVY-637]Fix NullPointerException when create database using thrifts… URL: https://github.com/apache/incubator-livy/pull/200 ## What changes were proposed in this pull request? Spark beeline use old hive-jdbc-client doesn’t do null point ref check. So when new TRowSet, setColumes make sure column set not null. ## How was this patch tested? Connect to livy's thriftserver using spark beeline. And create/use/drop database will no longer have nullpointerexceptions after execution. 
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