spark git commit: [SPARK-11463] [PYSPARK] only install signal in main thread

Repository: spark Updated Branches: refs/heads/branch-1.6 649a0a357 -> 85bc72908 [SPARK-11463] [PYSPARK] only install signal in main thread Only install signal in main thread, or it will fail to create context in not-main thread. Author: Davies Liu Closes #9574 from

spark git commit: [SPARK-11463] [PYSPARK] only install signal in main thread

Repository: spark Updated Branches: refs/heads/master 1a8e0468a -> bd70244b3 [SPARK-11463] [PYSPARK] only install signal in main thread Only install signal in main thread, or it will fail to create context in not-main thread. Author: Davies Liu Closes #9574 from