Alexis Seigneurin created SPARK-4560:
----------------------------------------
Summary: Lambda deserialization error
Key: SPARK-4560
URL: https://issues.apache.org/jira/browse/SPARK-4560
Project: Spark
Issue Type: Bug
Affects Versions: 1.1.0
Environment: Java 8.0.25
Reporter: Alexis Seigneurin
I'm getting an error saying a lambda could not be deserialized. Here is the
code:
{code}
TwitterUtils.createStream(sc, twitterAuth, filters)
.map(t -> t.getText())
.foreachRDD(tweets -> {
tweets.foreach(x -> System.out.println(x));
return null;
});
{code}
Here is the exception:
{noformat}
java.io.IOException: unexpected exception type
at
java.io.ObjectStreamClass.throwMiscException(ObjectStreamClass.java:1538)
at
java.io.ObjectStreamClass.invokeReadResolve(ObjectStreamClass.java:1110)
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1810)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
at
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918)
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
at
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918)
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
at
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918)
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
at
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918)
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
at
org.apache.spark.serializer.JavaDeserializationStream.readObject(JavaSerializer.scala:62)
at
org.apache.spark.serializer.JavaSerializerInstance.deserialize(JavaSerializer.scala:87)
at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:57)
at org.apache.spark.scheduler.Task.run(Task.scala:54)
at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:177)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at
java.lang.invoke.SerializedLambda.readResolve(SerializedLambda.java:230)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at
java.io.ObjectStreamClass.invokeReadResolve(ObjectStreamClass.java:1104)
... 27 more
Caused by: java.lang.IllegalArgumentException: Invalid lambda deserialization
at
com.seigneurin.spark.IndexTweets.$deserializeLambda$(IndexTweets.java:1)
... 37 more
{noformat}
The weird thing is, if I write the following code (the map operation is inside
the foreachRDD), it works without problem.
{code}
TwitterUtils.createStream(sc, twitterAuth, filters)
.foreachRDD(tweets -> {
tweets.map(t -> t.getText())
.foreach(x -> System.out.println(x));
return null;
});
{code}
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