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[SPARK-21146][CORE] Master/Worker should handle and shutdown when any thread gets UncaughtException
## What changes were proposed in this pull request? Adding the default UncaughtExceptionHandler to the Worker. ## How was this patch tested? I verified it manually, when any of the worker thread gets uncaught exceptions then the default UncaughtExceptionHandler will handle those exceptions. Author: Devaraj K <devaraj@apache.org> Closes #18357 from devaraj-kavali/SPARK-21146.
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- core/src/main/scala/org/apache/spark/deploy/master/Master.scala 3 additions, 1 deletion...rc/main/scala/org/apache/spark/deploy/master/Master.scala
- core/src/main/scala/org/apache/spark/deploy/worker/Worker.scala 3 additions, 1 deletion...rc/main/scala/org/apache/spark/deploy/worker/Worker.scala
- core/src/main/scala/org/apache/spark/executor/Executor.scala 1 addition, 1 deletioncore/src/main/scala/org/apache/spark/executor/Executor.scala
- core/src/main/scala/org/apache/spark/util/SparkUncaughtExceptionHandler.scala 6 additions, 5 deletions...org/apache/spark/util/SparkUncaughtExceptionHandler.scala
- core/src/main/scala/org/apache/spark/util/Utils.scala 3 additions, 1 deletioncore/src/main/scala/org/apache/spark/util/Utils.scala
- resource-managers/mesos/src/main/scala/org/apache/spark/deploy/mesos/MesosClusterDispatcher.scala 1 addition, 1 deletion...rg/apache/spark/deploy/mesos/MesosClusterDispatcher.scala
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