spark

[SPARK-19787][ML] Changing the default parameter of regParam.

[SPARK-19761][SQL] create InMemoryFileIndex with an empty rootPaths when set PARALLEL_PARTITION_DISCOVERY_THRESHOLD to zero failed

[SPARK-19766][SQL] Constant alias columns in INNER JOIN should not be folded by FoldablePropagation rule

[SPARK-19736][SQL] refreshByPath should clear all cached plans with the specified path

[SPARK-19633][SS] FileSource read from FileSink