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Posted to issues@spark.apache.org by "Sean Owen (JIRA)" <ji...@apache.org> on 2017/09/24 19:16:01 UTC
[jira] [Commented] (SPARK-14540) Support Scala 2.12 closures and
Java 8 lambdas in ClosureCleaner
[ https://issues.apache.org/jira/browse/SPARK-14540?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16178320#comment-16178320 ]
Sean Owen commented on SPARK-14540:
-----------------------------------
[~joshrosen] [~iakovlev] I tried this test on master, now that some other foundation work for 2.12 has gone into master, and now that Scala 2.12.3 is available. I don't observe this failure. 2.12.3 might indeed have sorted it out.
> Support Scala 2.12 closures and Java 8 lambdas in ClosureCleaner
> ----------------------------------------------------------------
>
> Key: SPARK-14540
> URL: https://issues.apache.org/jira/browse/SPARK-14540
> Project: Spark
> Issue Type: Sub-task
> Components: Spark Core
> Reporter: Josh Rosen
>
> Using https://github.com/JoshRosen/spark/tree/build-for-2.12, I tried running ClosureCleanerSuite with Scala 2.12 and ran into two bad test failures:
> {code}
> [info] - toplevel return statements in closures are identified at cleaning time *** FAILED *** (32 milliseconds)
> [info] Expected exception org.apache.spark.util.ReturnStatementInClosureException to be thrown, but no exception was thrown. (ClosureCleanerSuite.scala:57)
> {code}
> and
> {code}
> [info] - user provided closures are actually cleaned *** FAILED *** (56 milliseconds)
> [info] Expected ReturnStatementInClosureException, but got org.apache.spark.SparkException: Job aborted due to stage failure: Task not serializable: java.io.NotSerializableException: java.lang.Object
> [info] - element of array (index: 0)
> [info] - array (class "[Ljava.lang.Object;", size: 1)
> [info] - field (class "java.lang.invoke.SerializedLambda", name: "capturedArgs", type: "class [Ljava.lang.Object;")
> [info] - object (class "java.lang.invoke.SerializedLambda", SerializedLambda[capturingClass=class org.apache.spark.util.TestUserClosuresActuallyCleaned$, functionalInterfaceMethod=scala/runtime/java8/JFunction1$mcII$sp.apply$mcII$sp:(I)I, implementation=invokeStatic org/apache/spark/util/TestUserClosuresActuallyCleaned$.org$apache$spark$util$TestUserClosuresActuallyCleaned$$$anonfun$69:(Ljava/lang/Object;I)I, instantiatedMethodType=(I)I, numCaptured=1])
> [info] - element of array (index: 0)
> [info] - array (class "[Ljava.lang.Object;", size: 1)
> [info] - field (class "java.lang.invoke.SerializedLambda", name: "capturedArgs", type: "class [Ljava.lang.Object;")
> [info] - object (class "java.lang.invoke.SerializedLambda", SerializedLambda[capturingClass=class org.apache.spark.rdd.RDD, functionalInterfaceMethod=scala/Function3.apply:(Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;, implementation=invokeStatic org/apache/spark/rdd/RDD.org$apache$spark$rdd$RDD$$$anonfun$20$adapted:(Lscala/Function1;Lorg/apache/spark/TaskContext;Ljava/lang/Object;Lscala/collection/Iterator;)Lscala/collection/Iterator;, instantiatedMethodType=(Lorg/apache/spark/TaskContext;Ljava/lang/Object;Lscala/collection/Iterator;)Lscala/collection/Iterator;, numCaptured=1])
> [info] - field (class "org.apache.spark.rdd.MapPartitionsRDD", name: "f", type: "interface scala.Function3")
> [info] - object (class "org.apache.spark.rdd.MapPartitionsRDD", MapPartitionsRDD[2] at apply at Transformer.scala:22)
> [info] - field (class "scala.Tuple2", name: "_1", type: "class java.lang.Object")
> [info] - root object (class "scala.Tuple2", (MapPartitionsRDD[2] at apply at Transformer.scala:22,org.apache.spark.SparkContext$$Lambda$957/431842435@6e803685)).
> [info] This means the closure provided by user is not actually cleaned. (ClosureCleanerSuite.scala:78)
> {code}
> We'll need to figure out a closure cleaning strategy which works for 2.12 lambdas.
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