spark git commit: [SPARK-5683] [SQL] Avoid multiple json generator created

Repository: spark Updated Branches: refs/heads/branch-1.3 748cdc15e -> fc0446f66 [SPARK-5683] [SQL] Avoid multiple json generator created Author: Cheng Hao Closes #4468 from chenghao-intel/json and squashes the following commits: aeb7801 [Cheng Hao] avoid multiple json generator created (c

spark git commit: [SPARK-5683] [SQL] Avoid multiple json generator created

Repository: spark Updated Branches: refs/heads/master 6195e2473 -> a60aea86b [SPARK-5683] [SQL] Avoid multiple json generator created Author: Cheng Hao Closes #4468 from chenghao-intel/json and squashes the following commits: aeb7801 [Cheng Hao] avoid multiple json generator created Proje