[SPARK-10642] Crash in rdd.lookup() with "java.lang.Long cannot be cast to java.lang.Integer"

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.5.0
• Fix Version/s: 1.2.3, 1.3.2, 1.4.2, 1.5.1, 1.6.0
• Component/s: PySpark

Environment

OSX

• Assignee: L. C. Hsieh
• Reporter: Thouis Jones
• Created: 16/Sep/15 18:30
• Updated: 22/Sep/15 10:37
• Resolved: 17/Sep/15 17:03

Description

Running this command:

sc.parallelize([(('a', 'b'), 'c')]).groupByKey().partitionBy(20).cache().lookup(('a', 'b'))

gives the following error:

15/09/16 14:22:23 INFO SparkContext: Starting job: runJob at PythonRDD.scala:361
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/Cellar/apache-spark/1.5.0/libexec/python/pyspark/rdd.py", line 2199, in lookup
    return self.ctx.runJob(values, lambda x: x, [self.partitioner(key)])
  File "/usr/local/Cellar/apache-spark/1.5.0/libexec/python/pyspark/context.py", line 916, in runJob
    port = self._jvm.PythonRDD.runJob(self._jsc.sc(), mappedRDD._jrdd, partitions)
  File "/usr/local/Cellar/apache-spark/1.5.0/libexec/python/lib/py4j-0.8.2.1-src.zip/py4j/java_gateway.py", line 538, in __call__
  File "/usr/local/Cellar/apache-spark/1.5.0/libexec/python/pyspark/sql/utils.py", line 36, in deco
    return f(*a, **kw)
  File "/usr/local/Cellar/apache-spark/1.5.0/libexec/python/lib/py4j-0.8.2.1-src.zip/py4j/protocol.py", line 300, in get_return_value
py4j.protocol.Py4JJavaError: An error occurred while calling z:org.apache.spark.api.python.PythonRDD.runJob.
: java.lang.ClassCastException: java.lang.Long cannot be cast to java.lang.Integer
	at scala.runtime.BoxesRunTime.unboxToInt(BoxesRunTime.java:106)
	at org.apache.spark.scheduler.DAGScheduler$$anonfun$submitJob$1.apply(DAGScheduler.scala:530)
	at scala.collection.Iterator$class.find(Iterator.scala:780)
	at scala.collection.AbstractIterator.find(Iterator.scala:1157)
	at scala.collection.IterableLike$class.find(IterableLike.scala:79)
	at scala.collection.AbstractIterable.find(Iterable.scala:54)
	at org.apache.spark.scheduler.DAGScheduler.submitJob(DAGScheduler.scala:530)
	at org.apache.spark.scheduler.DAGScheduler.runJob(DAGScheduler.scala:558)
	at org.apache.spark.SparkContext.runJob(SparkContext.scala:1813)
	at org.apache.spark.SparkContext.runJob(SparkContext.scala:1826)
	at org.apache.spark.SparkContext.runJob(SparkContext.scala:1839)
	at org.apache.spark.api.python.PythonRDD$.runJob(PythonRDD.scala:361)
	at org.apache.spark.api.python.PythonRDD.runJob(PythonRDD.scala)
	at sun.reflect.GeneratedMethodAccessor49.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:231)
	at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:379)
	at py4j.Gateway.invoke(Gateway.java:259)
	at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:133)
	at py4j.commands.CallCommand.execute(CallCommand.java:79)
	at py4j.GatewayConnection.run(GatewayConnection.java:207)
	at java.lang.Thread.run(Thread.java:745)

Issue Links

• links to: [Github] Pull Request #8796 (viirya)