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Posted to dev@flink.apache.org by "Till Rohrmann (JIRA)" <ji...@apache.org> on 2014/10/27 14:38:34 UTC

[jira] [Created] (FLINK-1193) InvalidTypesException for Array[Array[Tuple2[Int, Double]]]

Till Rohrmann created FLINK-1193:
------------------------------------

             Summary: InvalidTypesException for Array[Array[Tuple2[Int, Double]]]
                 Key: FLINK-1193
                 URL: https://issues.apache.org/jira/browse/FLINK-1193
             Project: Flink
          Issue Type: Bug
            Reporter: Till Rohrmann


The TypeExtractor cannot handle nested arrays with non-trivial element types. For example, the following code cannot be run
{code}
val input = env.fromCollection(List(1,2,3,4))
val mapped = input.map{
  id => {
    val pair = (1,1.0)
    val a = Array(pair)
    val b = Array(a)
    b
  }
}
{code}

The resulting type Array[Array[Tuple2[Int, Double]]] cannot be extracted. It would be nice, if Flink supported these types.



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