spark git commit: [SPARK-15140][SQL] make the semantics of null input object for encoder clear

Repository: spark Updated Branches: refs/heads/branch-2.0 52376e067 -> 7315acf89 [SPARK-15140][SQL] make the semantics of null input object for encoder clear ## What changes were proposed in this pull request? For input object of non-flat type, we can't encode it to row if it's null, as Spar

spark git commit: [SPARK-15140][SQL] make the semantics of null input object for encoder clear

Repository: spark Updated Branches: refs/heads/master 28ad0f7b0 -> 11c83f83d [SPARK-15140][SQL] make the semantics of null input object for encoder clear ## What changes were proposed in this pull request? For input object of non-flat type, we can't encode it to row if it's null, as Spark SQ