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Posted to issues@spark.apache.org by "Thouis Jones (JIRA)" <ji...@apache.org> on 2015/09/16 20:34:45 UTC
[jira] [Commented] (SPARK-10642) Crash in rdd.lookup() with
"java.lang.Long cannot be cast to java.lang.Integer"
[ https://issues.apache.org/jira/browse/SPARK-10642?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14790884#comment-14790884 ]
Thouis Jones commented on SPARK-10642:
--------------------------------------
Simpler cases.
Fails:
{code}
sc.parallelize([(('a', 'b'), 'c')]).groupByKey().lookup(('a', 'b'))
{code}
Works:
{code}
sc.parallelize([(('a', 'b'), 'c')]).groupByKey().map(lambda x: x).lookup(('a', 'b'))
{code}
> Crash in rdd.lookup() with "java.lang.Long cannot be cast to java.lang.Integer"
> -------------------------------------------------------------------------------
>
> Key: SPARK-10642
> URL: https://issues.apache.org/jira/browse/SPARK-10642
> Project: Spark
> Issue Type: Bug
> Components: PySpark
> Affects Versions: 1.5.0
> Environment: OSX
> Reporter: Thouis Jones
>
> Running this command:
> {code}
> sc.parallelize([(('a', 'b'), 'c')]).groupByKey().partitionBy(20).cache().lookup(('a', 'b'))
> {code}
> gives the following error:
> {noformat}
> 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)
> {noformat}
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