spark git commit: [SPARK-20534][SQL] Make outer generate exec return empty rows

2017-05-01 Thread lixiao
Repository: spark Updated Branches: refs/heads/branch-2.2 c890e938c -> 813abd2db [SPARK-20534][SQL] Make outer generate exec return empty rows ## What changes were proposed in this pull request? Generate exec does not produce `null` values if the generator for the input row is empty and the

spark git commit: [SPARK-20534][SQL] Make outer generate exec return empty rows

2017-05-01 Thread lixiao
Repository: spark Updated Branches: refs/heads/master f0169a1c6 -> 6b44c4d63 [SPARK-20534][SQL] Make outer generate exec return empty rows ## What changes were proposed in this pull request? Generate exec does not produce `null` values if the generator for the input row is empty and the