Major Description
When running unit-tests or examples from command line or Intellij, SparkContext throws errors.
For example:
./bin/run-example ml.JavaNaiveBayesExample
Exception in thread "main" 16/05/25 15:17:55 INFO OutputCommitCoordinator$OutputCommitCoordinatorEndpoint: OutputCommitCoordinator stopped!
java.lang.NoSuchMethodError: java.util.concurrent.ConcurrentHashMap.keySet()Ljava/util/concurrent/ConcurrentHashMap$KeySetView;
at org.apache.spark.rpc.netty.Dispatcher.stop(Dispatcher.scala:176)
at org.apache.spark.rpc.netty.NettyRpcEnv.cleanup(NettyRpcEnv.scala:291)
at org.apache.spark.rpc.netty.NettyRpcEnv.shutdown(NettyRpcEnv.scala:269)
at org.apache.spark.SparkEnv.stop(SparkEnv.scala:91)
at org.apache.spark.SparkContext$$anonfun$stop$11.apply$mcV$sp(SparkContext.scala:1796)
at org.apache.spark.util.Utils$.tryLogNonFatalError(Utils.scala:1219)
at org.apache.spark.SparkContext.stop(SparkContext.scala:1795)
at org.apache.spark.sql.SparkSession.stop(SparkSession.scala:577)
at org.apache.spark.examples.ml.JavaNaiveBayesExample.main(JavaNaiveBayesExample.java:61)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:724)
at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:180)
at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:205)
at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:119)
at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
16/05/25 15:17:55 INFO ShutdownHookManager: Shutdown hook called
