spark git commit: [SPARK-12281][CORE] Fix a race condition when reporting ExecutorState in the shutdown hook

Repository: spark Updated Branches: refs/heads/branch-1.6 d7e3bfd7d -> fbf16da2e [SPARK-12281][CORE] Fix a race condition when reporting ExecutorState in the shutdown hook 1. Make sure workers and masters exit so that no worker or master will still be running when triggering the shutdown

spark git commit: [SPARK-12281][CORE] Fix a race condition when reporting ExecutorState in the shutdown hook

Repository: spark Updated Branches: refs/heads/master 8af2f8c61 -> 2aecda284 [SPARK-12281][CORE] Fix a race condition when reporting ExecutorState in the shutdown hook 1. Make sure workers and masters exit so that no worker or master will still be running when triggering the shutdown hook.