it happened several times already, worked again after restart Zeppelin
I see consistently similar error when died
ERROR [2017-06-14 17:59:59,705] ({pool-2-thread-2}
SparkInterpreter.java[putLatestVarInResourcePool]:1253) -
java.lang.NullPointerException
at scala.tools.nsc.interpreter.IMain$ReadEvalPrint.call(IMain.scala:786)
at
org.apache.zeppelin.spark.SparkInterpreter.getLastObject(SparkInterpreter.java:1114)
at
org.apache.zeppelin.spark.SparkInterpreter.putLatestVarInResourcePool(SparkInterpreter.java:1249)
at
org.apache.zeppelin.spark.SparkInterpreter.interpretInput(SparkInterpreter.java:1232)
at
org.apache.zeppelin.spark.SparkInterpreter.interpret(SparkInterpreter.java:1144)
at
org.apache.zeppelin.spark.SparkInterpreter.interpret(SparkInterpreter.java:1137)
at
org.apache.zeppelin.interpreter.LazyOpenInterpreter.interpret(LazyOpenInterpreter.java:95)
at
org.apache.zeppelin.interpreter.remote.RemoteInterpreterServer$InterpretJob.jobRun(RemoteInterpreterServer.java:490)
at org.apache.zeppelin.scheduler.Job.run(Job.java:175)
at org.apache.zeppelin.scheduler.FIFOScheduler$1.run(FIFOScheduler.java:139)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
