Bryan Cutler 1c9a386c6b [SPARK-13602][CORE] Add shutdown hook to DriverRunner to prevent driver process leak ... ## What changes were proposed in this pull request? Added shutdown hook to DriverRunner to kill the driver process in case the Worker JVM exits suddenly and the `WorkerWatcher` was unable to properly catch this. Did some cleanup to consolidate driver state management and setting of finalized vars within the running thread. ## How was this patch tested? Added unit tests to verify that final state and exception variables are set accordingly for successfull, failed, and errors in the driver process. Retrofitted existing test to verify killing of mocked process ends with the correct state and stops properly Manually tested (with deploy-mode=cluster) that the shutdown hook is called by forcibly exiting the `Worker` and various points in the code with the `WorkerWatcher` both disabled and enabled. Also, manually killed the driver through the ui and verified that the `DriverRunner` interrupted, killed the process and exited properly. Author: Bryan Cutler <cutlerb@gmail.com> Closes #11746 from BryanCutler/DriverRunner-shutdown-hook-SPARK-13602.		2016-08-11 14:49:11 -07:00
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src	[SPARK-13602][CORE] Add shutdown hook to DriverRunner to prevent driver process leak	2016-08-11 14:49:11 -07:00
pom.xml	[SPARK-16535][BUILD] In pom.xml, remove groupId which is redundant definition and inherited from the parent	2016-07-19 11:59:46 +01:00