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https://issues.apache.org/jira/browse/FLINK-1193?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14303064#comment-14303064
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ASF GitHub Bot commented on FLINK-1193:
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Github user StephanEwen commented on the pull request:
https://github.com/apache/flink/pull/348#issuecomment-72630115
I will merge this, fixing the comment...
> 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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