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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-1193) InvalidTypesException for Array[Array[Tuple2[Int, Double]]]
Date Tue, 03 Feb 2015 12:24:35 GMT

    [ https://issues.apache.org/jira/browse/FLINK-1193?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14303176#comment-14303176
] 

ASF GitHub Bot commented on FLINK-1193:
---------------------------------------

Github user asfgit closed the pull request at:

    https://github.com/apache/flink/pull/348


> 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
>            Assignee: Timo Walther
>
> 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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