Wrap calls to the hooks with Utils.tryLogNonFatalError.

Author: carsonwang

core/src/main/scala/org/apache/spark/SparkContext.scala

@@ -1773,11 +1773,12 @@ class SparkContext(config: SparkConf) extends Logging with ExecutorAllocationCli
     // Unset YARN mode system env variable, to allow switching between cluster types.
     System.clearProperty("SPARK_YARN_MODE")
     SparkContext.clearActiveContext()
-    _stopHooks.foreach(_())
+    _stopHooks.foreach(hook => Utils.tryLogNonFatalError {
+      hook()
+    })
     logInfo("Successfully stopped SparkContext")
   }
 
-
   /**
    * Get Spark's home location from either a value set through the constructor,
    * or the spark.home Java property, or the SPARK_HOME environment variable