spark

[SPARK-8200] [MLLIB] Check for empty RDDs in StreamingLinearAlgorithm

[SPARK-2774] Set preferred locations for reduce tasks

[SPARK-8273] Driver hangs up when yarn shutdown in client mode

[SPARK-8290] spark class command builder need read SPARK_JAVA_OPTS and SPARK_DRIVER_MEMORY properly

[SPARK-7261] [CORE] Change default log level to WARN in the REPL