spark git commit: [SPARK-8368] [SPARK-8058] [SQL] HiveContext may override the context class loader of the current thread

Repository: spark Updated Branches: refs/heads/master 4be53d039 - c5876e529 [SPARK-8368] [SPARK-8058] [SQL] HiveContext may override the context class loader of the current thread https://issues.apache.org/jira/browse/SPARK-8368 Also, I add tests according

spark git commit: [SPARK-8368] [SPARK-8058] [SQL] HiveContext may override the context class loader of the current thread (branch 1.4)

Repository: spark Updated Branches: refs/heads/branch-1.4 4b2c793a2 - 9ac839366 [SPARK-8368] [SPARK-8058] [SQL] HiveContext may override the context class loader of the current thread (branch 1.4) This is for 1.4 branch (based on https://github.com/apache/spark/pull/6891). Author: Yin Huai