Hi, I am new to Apache Spark. I am trying to parse nested json using pyspark. Here is the code by which I am trying to parse Json. I am using Apache Spark 1.2.0 version of cloudera CDH 5.3.2.
lines = sc.textFile(inputFile) import json def func(x): json_str = json.loads(x) if json_str['label']: if json_str['label']['label2']: return (1,1) return (0,1) lines.map(func).reduceByKey(lambda a,b: a + b).saveAsTextFile(outputFile) I am getting following error, ERROR [Executor task launch worker-13] executor.Executor (Logging.scala:logError(96)) - Exception in task 1.0 in stage 14.0 (TID 25) org.apache.spark.api.python.PythonException: Traceback (most recent call last): File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/worker.py", line 107, in main process() File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/worker.py", line 98, in process serializer.dump_stream(func(split_index, iterator), outfile) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py", line 2073, in pipeline_func return func(split, prev_func(split, iterator)) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py", line 2073, in pipeline_func return func(split, prev_func(split, iterator)) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py", line 247, in func return f(iterator) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py", line 1561, in combineLocally merger.mergeValues(iterator) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/shuffle.py", line 252, in mergeValues for k, v in iterator: File "<stdin>", line 2, in func File "/usr/lib64/python2.6/json/__init__.py", line 307, in loads return _default_decoder.decode(s) File "/usr/lib64/python2.6/json/decoder.py", line 319, in decode obj, end = self.raw_decode(s, idx=_w(s, 0).end()) File "/usr/lib64/python2.6/json/decoder.py", line 336, in raw_decode obj, end = self._scanner.iterscan(s, **kw).next() File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan rval, next_pos = action(m, context) File "/usr/lib64/python2.6/json/decoder.py", line 183, in JSONObject value, end = iterscan(s, idx=end, context=context).next() File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan rval, next_pos = action(m, context) File "/usr/lib64/python2.6/json/decoder.py", line 183, in JSONObject value, end = iterscan(s, idx=end, context=context).next() File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan rval, next_pos = action(m, context) File "/usr/lib64/python2.6/json/decoder.py", line 155, in JSONString return scanstring(match.string, match.end(), encoding, strict) ValueError: Invalid \escape: line 1 column 855 (char 855) at org.apache.spark.api.python.PythonRDD$$anon$1.read(PythonRDD.scala:137) at org.apache.spark.api.python.PythonRDD$$anon$1.<init>(PythonRDD.scala:174) at org.apache.spark.api.python.PythonRDD.compute(PythonRDD.scala:96) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:263) at org.apache.spark.rdd.RDD.iterator(RDD.scala:230) at org.apache.spark.api.python.PairwiseRDD.compute(PythonRDD.scala:305) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:263) at org.apache.spark.rdd.RDD.iterator(RDD.scala:230) at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:68) at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41) at org.apache.spark.scheduler.Task.run(Task.scala:56) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:196) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) 2015-07-20 09:58:24,727 ERROR [Executor task launch worker-12] executor.Executor (Logging.scala:logError(96)) - Exception in task 0.0 in stage 14.0 (TID 24) org.apache.spark.api.python.PythonException: Traceback (most recent call last): File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/worker.py", line 107, in main process() File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/worker.py", line 98, in process serializer.dump_stream(func(split_index, iterator), outfile) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py", line 2073, in pipeline_func return func(split, prev_func(split, iterator)) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py", line 2073, in pipeline_func return func(split, prev_func(split, iterator)) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py", line 247, in func return f(iterator) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py", line 1561, in combineLocally merger.mergeValues(iterator) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/shuffle.py", line 252, in mergeValues for k, v in iterator: File "<stdin>", line 2, in func File "/usr/lib64/python2.6/json/__init__.py", line 307, in loads return _default_decoder.decode(s) File "/usr/lib64/python2.6/json/decoder.py", line 319, in decode obj, end = self.raw_decode(s, idx=_w(s, 0).end()) File "/usr/lib64/python2.6/json/decoder.py", line 336, in raw_decode obj, end = self._scanner.iterscan(s, **kw).next() File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan rval, next_pos = action(m, context) File "/usr/lib64/python2.6/json/decoder.py", line 183, in JSONObject value, end = iterscan(s, idx=end, context=context).next() File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan rval, next_pos = action(m, context) File "/usr/lib64/python2.6/json/decoder.py", line 183, in JSONObject value, end = iterscan(s, idx=end, context=context).next() File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan rval, next_pos = action(m, context) File "/usr/lib64/python2.6/json/decoder.py", line 155, in JSONString return scanstring(match.string, match.end(), encoding, strict) ValueError: Invalid \escape: line 1 column 734 (char 734) at org.apache.spark.api.python.PythonRDD$$anon$1.read(PythonRDD.scala:137) at org.apache.spark.api.python.PythonRDD$$anon$1.<init>(PythonRDD.scala:174) at org.apache.spark.api.python.PythonRDD.compute(PythonRDD.scala:96) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:263) at org.apache.spark.rdd.RDD.iterator(RDD.scala:230) at org.apache.spark.api.python.PairwiseRDD.compute(PythonRDD.scala:305) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:263) at org.apache.spark.rdd.RDD.iterator(RDD.scala:230) at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:68) at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41) at org.apache.spark.scheduler.Task.run(Task.scala:56) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:196) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) 2015-07-20 09:58:24,730 WARN [task-result-getter-0] scheduler.TaskSetManager (Logging.scala:logWarning(71)) - Lost task 1.0 in stage 14.0 (TID 25, localhost): org.apache.spark.api.python.PythonException: Traceback (most recent call last): File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/worker.py", line 107, in main process() File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/worker.py", line 98, in process serializer.dump_stream(func(split_index, iterator), outfile) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py", line 2073, in pipeline_func return func(split, prev_func(split, iterator)) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py", line 2073, in pipeline_func return func(split, prev_func(split, iterator)) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py", line 247, in func return f(iterator) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py", line 1561, in combineLocally merger.mergeValues(iterator) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/shuffle.py", line 252, in mergeValues for k, v in iterator: File "<stdin>", line 2, in func File "/usr/lib64/python2.6/json/__init__.py", line 307, in loads return _default_decoder.decode(s) File "/usr/lib64/python2.6/json/decoder.py", line 319, in decode obj, end = self.raw_decode(s, idx=_w(s, 0).end()) File "/usr/lib64/python2.6/json/decoder.py", line 336, in raw_decode obj, end = self._scanner.iterscan(s, **kw).next() File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan rval, next_pos = action(m, context) File "/usr/lib64/python2.6/json/decoder.py", line 183, in JSONObject value, end = iterscan(s, idx=end, context=context).next() File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan rval, next_pos = action(m, context) File "/usr/lib64/python2.6/json/decoder.py", line 183, in JSONObject value, end = iterscan(s, idx=end, context=context).next() File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan rval, next_pos = action(m, context) File "/usr/lib64/python2.6/json/decoder.py", line 155, in JSONString return scanstring(match.string, match.end(), encoding, strict) ValueError: Invalid \escape: line 1 column 855 (char 855) at org.apache.spark.api.python.PythonRDD$$anon$1.read(PythonRDD.scala:137) at org.apache.spark.api.python.PythonRDD$$anon$1.<init>(PythonRDD.scala:174) at org.apache.spark.api.python.PythonRDD.compute(PythonRDD.scala:96) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:263) at org.apache.spark.rdd.RDD.iterator(RDD.scala:230) at org.apache.spark.api.python.PairwiseRDD.compute(PythonRDD.scala:305) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:263) at org.apache.spark.rdd.RDD.iterator(RDD.scala:230) at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:68) at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41) at org.apache.spark.scheduler.Task.run(Task.scala:56) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:196) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) 2015-07-20 09:58:24,731 ERROR [task-result-getter-0] scheduler.TaskSetManager (Logging.scala:logError(75)) - Task 1 in stage 14.0 failed 1 times; aborting job 2015-07-20 09:58:24,731 INFO [task-result-getter-0] scheduler.TaskSchedulerImpl (Logging.scala:logInfo(59)) - Removed TaskSet 14.0, whose tasks have all completed, from pool Traceback (most recent call last): 2015-07-20 09:58:24,732 INFO [sparkDriver-akka.actor.default-dispatcher-2] scheduler.TaskSchedulerImpl (Logging.scala:logInfo(59)) - Cancelling stage 14 File "<stdin>", line 1, in <module> File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py", line 1288, in saveAsTextFile keyed._jrdd.map(self.ctx._jvm.BytesToString()).saveAsTextFile(path) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/lib/py4j-0.8.2.1-src.zip/py4j/java_gateway.py", line 538, in __call__ File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/lib/py4j-0.8.2.1-src.zip/py4j/protocol.py", line 300, in get_return_value py4j.protocol2015-07-20 09:58:24,732 WARN [task-result-getter-1] scheduler.TaskSetManager (Logging.scala:logWarning(71)) - Lost task 0.0 in stage 14.0 (TID 24, localhost): org.apache.spark.api.python.PythonException: Traceback (most recent call last): .Py4JJavaError File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/worker.py", line 107, in main process() File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/worker.py", line 98, in process serializer.dump_stream(func(split_index, iterator), outfile) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py", line 2073, in pipeline_func return func(split, prev_func(split, iterator)) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py", line 2073, in pipeline_func return func(split, prev_func(split, iterator)) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py", line 247, in func return f(iterator) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py", line 1561, in combineLocally merger.mergeValues(iterator) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/shuffle.py", line 252, in mergeValues for k, v in iterator: File "<stdin>", line 2, in func File "/usr/lib64/python2.6/json/__init__.py", line 307, in loads return _default_decoder.decode(s) File "/usr/lib64/python2.6/json/decoder.py", line 319, in decode obj, end = self.raw_decode(s, idx=_w(s, 0).end()) File "/usr/lib64/python2.6/json/decoder.py", line 336, in raw_decode obj, end = self._scanner.iterscan(s, **kw).next() File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan rval, next_pos = action(m, context) File "/usr/lib64/python2.6/json/decoder.py", line 183, in JSONObject value, end = iterscan(s, idx=end, context=context).next() File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan rval, next_pos = action(m, context) File "/usr/lib64/python2.6/json/decoder.py", line 183, in JSONObject value, end = iterscan(s, idx=end, context=context).next() File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan rval, next_pos = action(m, context) File "/usr/lib64/python2.6/json/decoder.py", line 155, in JSONString return scanstring(match.string, match.end(), encoding, strict) ValueError: Invalid \escape: line 1 column 734 (char 734) at org.apache.spark.api.python.PythonRDD$$anon$1.read(PythonRDD.scala:137) at org.apache.spark.api.python.PythonRDD$$anon$1.<init>(PythonRDD.scala:174) at org.apache.spark.api.python.PythonRDD.compute(PythonRDD.scala:96) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:263) at org.apache.spark.rdd.RDD.iterator(RDD.scala:230) at org.apache.spark.api.python.PairwiseRDD.compute(PythonRDD.scala:305) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:263) at org.apache.spark.rdd.RDD.iterator(RDD.scala:230) at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:68) at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41) at org.apache.spark.scheduler.Task.run(Task.scala:56) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:196) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) 2015-07-20 09:58:24,732 INFO [Thread-2] scheduler.DAGScheduler (Logging.scala:logInfo(59)) - Job 8 failed: saveAsTextFile at NativeMethodAccessorImpl.java:-2, took 0.090286 s 2015-07-20 09:58:24,733 INFO [task-result-getter-1] scheduler.TaskSchedulerImpl (Logging.scala:logInfo(59)) - Removed TaskSet 14.0, whose tasks have all completed, from pool : An error occurred while calling o276.saveAsTextFile. : org.apache.spark.SparkException: Job aborted due to stage failure: Task 1 in stage 14.0 failed 1 times, most recent failure: Lost task 1.0 in stage 14.0 (TID 25, localhost): org.apache.spark.api.python.PythonException: Traceback (most recent call last): File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/worker.py", line 107, in main process() File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/worker.py", line 98, in process serializer.dump_stream(func(split_index, iterator), outfile) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py", line 2073, in pipeline_func return func(split, prev_func(split, iterator)) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py", line 2073, in pipeline_func return func(split, prev_func(split, iterator)) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py", line 247, in func return f(iterator) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/rdd.py", line 1561, in combineLocally merger.mergeValues(iterator) File "/opt/cloudera/parcels/CDH-5.3.2-1.cdh5.3.2.p0.10/lib/spark/python/pyspark/shuffle.py", line 252, in mergeValues for k, v in iterator: File "<stdin>", line 2, in func File "/usr/lib64/python2.6/json/__init__.py", line 307, in loads return _default_decoder.decode(s) File "/usr/lib64/python2.6/json/decoder.py", line 319, in decode obj, end = self.raw_decode(s, idx=_w(s, 0).end()) File "/usr/lib64/python2.6/json/decoder.py", line 336, in raw_decode obj, end = self._scanner.iterscan(s, **kw).next() File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan rval, next_pos = action(m, context) File "/usr/lib64/python2.6/json/decoder.py", line 183, in JSONObject value, end = iterscan(s, idx=end, context=context).next() File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan rval, next_pos = action(m, context) File "/usr/lib64/python2.6/json/decoder.py", line 183, in JSONObject value, end = iterscan(s, idx=end, context=context).next() File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan rval, next_pos = action(m, context) File "/usr/lib64/python2.6/json/decoder.py", line 155, in JSONString return scanstring(match.string, match.end(), encoding, strict) ValueError: Invalid \escape: line 1 column 855 (char 855) at org.apache.spark.api.python.PythonRDD$$anon$1.read(PythonRDD.scala:137) at org.apache.spark.api.python.PythonRDD$$anon$1.<init>(PythonRDD.scala:174) at org.apache.spark.api.python.PythonRDD.compute(PythonRDD.scala:96) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:263) at org.apache.spark.rdd.RDD.iterator(RDD.scala:230) at org.apache.spark.api.python.PairwiseRDD.compute(PythonRDD.scala:305) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:263) at org.apache.spark.rdd.RDD.iterator(RDD.scala:230) at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:68) at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41) at org.apache.spark.scheduler.Task.run(Task.scala:56) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:196) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) Driver stacktrace: at org.apache.spark.scheduler.DAGScheduler.org $apache$spark$scheduler$DAGScheduler$$failJobAndIndependentStages(DAGScheduler.scala:1214) at org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1203) at org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1202) at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59) at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47) at org.apache.spark.scheduler.DAGScheduler.abortStage(DAGScheduler.scala:1202) at org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:696) at org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:696) at scala.Option.foreach(Option.scala:236) at org.apache.spark.scheduler.DAGScheduler.handleTaskSetFailed(DAGScheduler.scala:696) at org.apache.spark.scheduler.DAGSchedulerEventProcessActor$$anonfun$receive$2.applyOrElse(DAGScheduler.scala:1420) at akka.actor.ActorCell.receiveMessage(ActorCell.scala:498) at akka.actor.ActorCell.invoke(ActorCell.scala:456) at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:237) at akka.dispatch.Mailbox.run(Mailbox.scala:219) at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:386) at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) What I am doing wrong. Please guide. *Ajay Dubey*