[jira] [Resolved] (FLINK-990) Scala API: Compiler Hints are not forwarded

["Stephan Ewen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-990?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Stephan Ewen resolved FLINK-990.
--------------------------------

       Resolution: Fixed
    Fix Version/s: 0.6-incubating

Fixed via b422fe27879ab2d5ad54f782b7321b1b5808c245

> Scala API: Compiler Hints are not forwarded
> -------------------------------------------
>
>                 Key: FLINK-990
>                 URL: https://issues.apache.org/jira/browse/FLINK-990
>             Project: Flink
>          Issue Type: Bug
>            Reporter: Till Rohrmann
>            Assignee: Till Rohrmann
>             Fix For: 0.6-incubating
>
>
> The Scala API contains functions such as preserve, observe, neglect, uniqueKey etc. which can be used to specify compiler hints. However, they are not forwarded to the compiler. Thus an operation:
> DataSet[A] ds = input.map{ x=> x}
> ds.preserve(x=>x, y=>y)
> which should say that the fields stay constant, does not have an effect. 



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