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Posted to issues@spark.apache.org by "Michael Malak (JIRA)" <ji...@apache.org> on 2014/05/16 13:03:22 UTC

[jira] [Created] (SPARK-1857) map() with lookup() causes exception

Michael Malak created SPARK-1857:
------------------------------------

             Summary: map() with lookup() causes exception
                 Key: SPARK-1857
                 URL: https://issues.apache.org/jira/browse/SPARK-1857
             Project: Spark
          Issue Type: Bug
    Affects Versions: 0.9.0
            Reporter: Michael Malak


Using map() and lookup() in conjunction throws an exception

{noformat}
val a = sc.parallelize(Array(11))
val m = sc.parallelize(Array((11,21)))
a.map(m.lookup(_)(0)).collect

14/05/14 15:03:35 ERROR Executor: Exception in task ID 23
scala.MatchError: null
at org.apache.spark.rdd.PairRDDFunctions.lookup(PairRDDFunctions.scala:551)
{noformat}

A workaround is:

{noformat}
a.map((_,0)).join(m).map(_._2._2).collect
{noformat}



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