Christopher Ng created SPARK-4489:
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Summary: JavaPairRDD.collectAsMap from checkpoint RDD may fail
with ClassCastException
Key: SPARK-4489
URL: https://issues.apache.org/jira/browse/SPARK-4489
Project: Spark
Issue Type: Bug
Components: Java API
Affects Versions: 1.1.0
Reporter: Christopher Ng
Calling collectAsMap() on a JavaPairRDD reconstructed from a checkpoint fails
with a ClassCastException:
Exception in thread "main" java.lang.ClassCastException: [Ljava.lang.Object;
cannot be cast to [Lscala.Tuple2;
at
org.apache.spark.rdd.PairRDDFunctions.collectAsMap(PairRDDFunctions.scala:595)
at
org.apache.spark.api.java.JavaPairRDD.collectAsMap(JavaPairRDD.scala:569)
at org.facboy.spark.CheckpointBug.main(CheckpointBug.java:46)
Code sample reproducing the issue:
https://gist.github.com/facboy/8387e950ffb0746a8272
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