Details
Major Description
Add Support for NamedTuples in RDDs. Some sample code is below, followed by the current error that comes from it.
Based on a quick conversation with ahirreddy, Dill might be a good solution here.
In [26]: from collections import namedtuple ... In [33]: Person = namedtuple('Person', 'id firstName lastName') In [34]: jon = Person(1, "Jon", "Doe") In [35]: jane = Person(2, "Jane", "Doe") In [36]: theDoes = sc.parallelize((jon, jane)) In [37]: theDoes.collect() Out[37]: [Person(id=1, firstName='Jon', lastName='Doe'), Person(id=2, firstName='Jane', lastName='Doe')] In [38]: theDoes.count() PySpark worker failed with exception: PySpark worker failed with exception: Traceback (most recent call last): File "/Users/pat/Projects/spark/python/pyspark/worker.py", line 77, in main serializer.dump_stream(func(split_index, iterator), outfile) File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 1373, in pipeline_func return func(split, prev_func(split, iterator)) File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 1373, in pipeline_func return func(split, prev_func(split, iterator)) File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 283, in func def func(s, iterator): return f(iterator) File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 708, in <lambda> return self.mapPartitions(lambda i: [sum(1 for _ in i)]).sum() File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 708, in <genexpr> return self.mapPartitions(lambda i: [sum(1 for _ in i)]).sum() File "/Users/pat/Projects/spark/python/pyspark/serializers.py", line 129, in load_stream yield self._read_with_length(stream) File "/Users/pat/Projects/spark/python/pyspark/serializers.py", line 146, in _read_with_length return self.loads(obj) AttributeError: 'module' object has no attribute 'Person' Traceback (most recent call last): File "/Users/pat/Projects/spark/python/pyspark/worker.py", line 77, in main serializer.dump_stream(func(split_index, iterator), outfile) File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 1373, in pipeline_func return func(split, prev_func(split, iterator)) File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 1373, in pipeline_func return func(split, prev_func(split, iterator)) File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 283, in func def func(s, iterator): return f(iterator) File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 708, in <lambda> return self.mapPartitions(lambda i: [sum(1 for _ in i)]).sum() File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 708, in <genexpr> return self.mapPartitions(lambda i: [sum(1 for _ in i)]).sum() File "/Users/pat/Projects/spark/python/pyspark/serializers.py", line 129, in load_stream yield self._read_with_length(stream) File "/Users/pat/Projects/spark/python/pyspark/serializers.py", line 146, in _read_with_length return self.loads(obj) AttributeError: 'module' object has no attribute 'Person' 14/04/30 14:43:53 ERROR Executor: Exception in task ID 23 org.apache.spark.api.python.PythonException: Traceback (most recent call last): File "/Users/pat/Projects/spark/python/pyspark/worker.py", line 77, in main serializer.dump_stream(func(split_index, iterator), outfile) File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 1373, in pipeline_func return func(split, prev_func(split, iterator)) File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 1373, in pipeline_func return func(split, prev_func(split, iterator)) File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 283, in func def func(s, iterator): return f(iterator) File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 708, in <lambda> return self.mapPartitions(lambda i: [sum(1 for _ in i)]).sum() File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 708, in <genexpr> return self.mapPartitions(lambda i: [sum(1 for _ in i)]).sum() File "/Users/pat/Projects/spark/python/pyspark/serializers.py", line 129, in load_stream yield self._read_with_length(stream) File "/Users/pat/Projects/spark/python/pyspark/serializers.py", line 146, in _read_with_length return self.loads(obj) AttributeError: 'module' object has no attribute 'Person' at org.apache.spark.api.python.PythonRDD$$anon$1.read(PythonRDD.scala:190) at org.apache.spark.api.python.PythonRDD$$anon$1.<init>(PythonRDD.scala:214) at org.apache.spark.api.python.PythonRDD.compute(PythonRDD.scala:151) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:262) at org.apache.spark.rdd.RDD.iterator(RDD.scala:229) at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:111) at org.apache.spark.scheduler.Task.run(Task.scala:51) at org.apache.spark.executor.Executor$TaskRunner$$anonfun$run$1.apply$mcV$sp(Executor.scala:210) at org.apache.spark.deploy.SparkHadoopUtil.runAsUser(SparkHadoopUtil.scala:46) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:175) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:744) 14/04/30 14:43:53 ERROR Executor: Exception in task ID 21 org.apache.spark.api.python.PythonException: Traceback (most recent call last): File "/Users/pat/Projects/spark/python/pyspark/worker.py", line 77, in main serializer.dump_stream(func(split_index, iterator), outfile) File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 1373, in pipeline_func return func(split, prev_func(split, iterator)) File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 1373, in pipeline_func return func(split, prev_func(split, iterator)) File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 283, in func def func(s, iterator): return f(iterator) File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 708, in <lambda> return self.mapPartitions(lambda i: [sum(1 for _ in i)]).sum() File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 708, in <genexpr> return self.mapPartitions(lambda i: [sum(1 for _ in i)]).sum() File "/Users/pat/Projects/spark/python/pyspark/serializers.py", line 129, in load_stream yield self._read_with_length(stream) File "/Users/pat/Projects/spark/python/pyspark/serializers.py", line 146, in _read_with_length return self.loads(obj) AttributeError: 'module' object has no attribute 'Person' at org.apache.spark.api.python.PythonRDD$$anon$1.read(PythonRDD.scala:190) at org.apache.spark.api.python.PythonRDD$$anon$1.<init>(PythonRDD.scala:214) at org.apache.spark.api.python.PythonRDD.compute(PythonRDD.scala:151) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:262) at org.apache.spark.rdd.RDD.iterator(RDD.scala:229) at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:111) at org.apache.spark.scheduler.Task.run(Task.scala:51) at org.apache.spark.executor.Executor$TaskRunner$$anonfun$run$1.apply$mcV$sp(Executor.scala:210) at org.apache.spark.deploy.SparkHadoopUtil.runAsUser(SparkHadoopUtil.scala:46) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:175) 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:744) 14/04/30 14:43:53 ERROR TaskSetManager: Task 5.0:3 failed 1 times; aborting job --------------------------------------------------------------------------- Py4JJavaError Traceback (most recent call last) <ipython-input-38-8689b264fa46> in <module>() ----> 1 theDoes.count() /Users/pat/Projects/spark/python/pyspark/rdd.pyc in count(self) 706 3 707 """ --> 708 return self.mapPartitions(lambda i: [sum(1 for _ in i)]).sum() 709 710 def stats(self): /Users/pat/Projects/spark/python/pyspark/rdd.pyc in sum(self) 697 6.0 698 """ --> 699 return self.mapPartitions(lambda x: [sum(x)]).reduce(operator.add) 700 701 def count(self): /Users/pat/Projects/spark/python/pyspark/rdd.pyc in reduce(self, f) 617 if acc is not None: 618 yield acc --> 619 vals = self.mapPartitions(func).collect() 620 return reduce(f, vals) 621 /Users/pat/Projects/spark/python/pyspark/rdd.pyc in collect(self) 581 """ 582 with _JavaStackTrace(self.context) as st: --> 583 bytesInJava = self._jrdd.collect().iterator() 584 return list(self._collect_iterator_through_file(bytesInJava)) 585 /Users/pat/Projects/spark/python/lib/py4j-0.8.1-src.zip/py4j/java_gateway.py in __call__(self, *args) 535 answer = self.gateway_client.send_command(command) 536 return_value = get_return_value(answer, self.gateway_client, --> 537 self.target_id, self.name) 538 539 for temp_arg in temp_args: /Users/pat/Projects/spark/python/lib/py4j-0.8.1-src.zip/py4j/protocol.py in get_return_value(answer, gateway_client, target_id, name) 298 raise Py4JJavaError( 299 'An error occurred while calling {0}{1}{2}.\n'. --> 300 format(target_id, '.', name), value) 301 else: 302 raise Py4JError( Py4JJavaError: An error occurred while calling o53.collect. : org.apache.spark.SparkException: Job aborted due to stage failure: Task 5.0:3 failed 1 times, most recent failure: Exception failure in TID 23 on host localhost: org.apache.spark.api.python.PythonException: Traceback (most recent call last): File "/Users/pat/Projects/spark/python/pyspark/worker.py", line 77, in main serializer.dump_stream(func(split_index, iterator), outfile) File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 1373, in pipeline_func return func(split, prev_func(split, iterator)) File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 1373, in pipeline_func return func(split, prev_func(split, iterator)) File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 283, in func def func(s, iterator): return f(iterator) File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 708, in <lambda> return self.mapPartitions(lambda i: [sum(1 for _ in i)]).sum() File "/Users/pat/Projects/spark/python/pyspark/rdd.py", line 708, in <genexpr> return self.mapPartitions(lambda i: [sum(1 for _ in i)]).sum() File "/Users/pat/Projects/spark/python/pyspark/serializers.py", line 129, in load_stream yield self._read_with_length(stream) File "/Users/pat/Projects/spark/python/pyspark/serializers.py", line 146, in _read_with_length return self.loads(obj) AttributeError: 'module' object has no attribute 'Person' org.apache.spark.api.python.PythonRDD$$anon$1.read(PythonRDD.scala:190) org.apache.spark.api.python.PythonRDD$$anon$1.<init>(PythonRDD.scala:214) org.apache.spark.api.python.PythonRDD.compute(PythonRDD.scala:151) org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:262) org.apache.spark.rdd.RDD.iterator(RDD.scala:229) org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:111) org.apache.spark.scheduler.Task.run(Task.scala:51) org.apache.spark.executor.Executor$TaskRunner$$anonfun$run$1.apply$mcV$sp(Executor.scala:210) org.apache.spark.deploy.SparkHadoopUtil.runAsUser(SparkHadoopUtil.scala:46) org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:175) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) java.lang.Thread.run(Thread.java:744) Driver stacktrace: at org.apache.spark.scheduler.DAGScheduler.org$apache$spark$scheduler$DAGScheduler$$failJobAndIndependentStages(DAGScheduler.scala:1033) at org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1017) at org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1015) at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59) at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47) at org.apache.spark.scheduler.DAGScheduler.abortStage(DAGScheduler.scala:1015) at org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:633) at org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:633) at scala.Option.foreach(Option.scala:236) at org.apache.spark.scheduler.DAGScheduler.handleTaskSetFailed(DAGScheduler.scala:633) at org.apache.spark.scheduler.DAGSchedulerEventProcessActor$$anonfun$receive$2.applyOrElse(DAGScheduler.scala:1207) at akka.actor.ActorCell.receiveMessage(ActorCell.scala:498) at akka.actor.ActorCell.invoke(ActorCell.scala:456) at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:237) at akka.dispatch.Mailbox.run(Mailbox.scala:219) at akka.dispatch.ForkJoinExecutorConfigurator$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)
Attachments
Issue Links
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SPARK-2010 Support for nested data in PySpark SQL
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- Resolved
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- links to
