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From Márton Balassi (JIRA) <j...@apache.org>
Subject [jira] [Assigned] (FLINK-1956) Runtime context not initialized in RichWindowMapFunction
Date Wed, 29 Apr 2015 11:32:06 GMT

     [ https://issues.apache.org/jira/browse/FLINK-1956?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Márton Balassi reassigned FLINK-1956:
-------------------------------------

    Assignee: Márton Balassi  (was: Marton Balassi)

> Runtime context not initialized in RichWindowMapFunction
> --------------------------------------------------------
>
>                 Key: FLINK-1956
>                 URL: https://issues.apache.org/jira/browse/FLINK-1956
>             Project: Flink
>          Issue Type: Bug
>          Components: Streaming
>            Reporter: Daniel Bali
>            Assignee: Márton Balassi
>              Labels: context, runtime, streaming, window
>
> Trying to access the runtime context in a rich window map function results in an exception.
The following snippet demonstrates the bug:
> {code}
>     env.generateSequence(0, 1000)
>     .window(Count.of(10))
>     .mapWindow(new RichWindowMapFunction<Long, Tuple2<Long, Long>>() {
>         @Override
>         public void mapWindow(Iterable<Long> input, Collector<Tuple2<Long,
Long>> out) throws Exception {
>             long self = getRuntimeContext().getIndexOfThisSubtask();
>             for (long value : input) {
>                 out.collect(new Tuple2<>(self, value));
>             }
>         }
>     }).flatten().print();
> {code}



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