[
https://issues.apache.org/jira/browse/SPARK-16086?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Davies Liu resolved SPARK-16086.
--------------------------------
Resolution: Fixed
Fix Version/s: 1.6.2
1.5.3
2.0.0
Issue resolved by pull request 13793
[https://github.com/apache/spark/pull/13793]
> Python UDF failed when there is no arguments
> --------------------------------------------
>
> Key: SPARK-16086
> URL: https://issues.apache.org/jira/browse/SPARK-16086
> Project: Spark
> Issue Type: Bug
> Components: PySpark, SQL
> Affects Versions: 1.5.2, 1.6.1
> Reporter: Davies Liu
> Assignee: Davies Liu
> Fix For: 2.0.0, 1.5.3, 1.6.2
>
>
> {code}
> >>> sqlContext.registerFunction("f", lambda : "a")
> >>> sqlContext.sql("select f()").show()
> {code}
> {code}
> org.apache.spark.SparkException: Job aborted due to stage failure: Task 0 in
> stage 171.0 failed 4 times, most recent failure: Lost task 0.3 in stage 171.0
> (TID 6226, ip-10-0-243-36.us-west-2.compute.internal):
> org.apache.spark.api.python.PythonException: Traceback (most recent call
> last):
> File "/databricks/spark/python/pyspark/worker.py", line 111, in main
> process()
> File "/databricks/spark/python/pyspark/worker.py", line 106, in process
> serializer.dump_stream(func(split_index, iterator), outfile)
> File "/databricks/spark/python/pyspark/serializers.py", line 263, in
> dump_stream
> vs = list(itertools.islice(iterator, batch))
> File "/databricks/spark/python/pyspark/serializers.py", line 139, in
> load_stream
> yield self._read_with_length(stream)
> File "/databricks/spark/python/pyspark/serializers.py", line 164, in
> _read_with_length
> return self.loads(obj)
> File "/databricks/spark/python/pyspark/serializers.py", line 422, in loads
> return pickle.loads(obj)
> File "/databricks/spark/python/pyspark/sql/types.py", line 1159, in <lambda>
> return lambda *a: dataType.fromInternal(a)
> File "/databricks/spark/python/pyspark/sql/types.py", line 568, in
> fromInternal
> return _create_row(self.names, values)
> File "/databricks/spark/python/pyspark/sql/types.py", line 1163, in
> _create_row
> row = Row(*values)
> File "/databricks/spark/python/pyspark/sql/types.py", line 1210, in __new__
> raise ValueError("No args or kwargs")
> ValueError: (ValueError('No args or kwargs',), <function <lambda> at
> 0x7f3bbc463320>, ())
> at
> org.apache.spark.api.python.PythonRunner$$anon$1.read(PythonRDD.scala:166)
> at
> org.apache.spark.api.python.PythonRunner$$anon$1.<init>(PythonRDD.scala:207)
> at org.apache.spark.api.python.PythonRunner.compute(PythonRDD.scala:125)
> at
> org.apache.spark.sql.execution.BatchPythonEvaluation$$anonfun$doExecute$1.apply(python.scala:405)
> at
> org.apache.spark.sql.execution.BatchPythonEvaluation$$anonfun$doExecute$1.apply(python.scala:370)
> at
> org.apache.spark.rdd.RDD$$anonfun$mapPartitions$1$$anonfun$apply$20.apply(RDD.scala:710)
> at
> org.apache.spark.rdd.RDD$$anonfun$mapPartitions$1$$anonfun$apply$20.apply(RDD.scala:710)
> at
> org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38)
> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:306)
> at org.apache.spark.rdd.RDD.iterator(RDD.scala:270)
> at
> org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38)
> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:306)
> at org.apache.spark.rdd.RDD.iterator(RDD.scala:270)
> at
> org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38)
> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:306)
> at org.apache.spark.rdd.RDD.iterator(RDD.scala:270)
> at
> org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38)
> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:306)
> at org.apache.spark.rdd.RDD.iterator(RDD.scala:270)
> at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:72)
> at org.apache.spark.scheduler.Task.run(Task.scala:96)
> at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:222)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> {code}
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