[jira] [Assigned] (FLINK-2294) Keyed State does not work with DOP=1

["Gyula Fora (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-2294?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gyula Fora reassigned FLINK-2294:
---------------------------------

    Assignee: Gyula Fora

> Keyed State does not work with DOP=1
> ------------------------------------
>
>                 Key: FLINK-2294
>                 URL: https://issues.apache.org/jira/browse/FLINK-2294
>             Project: Flink
>          Issue Type: Bug
>          Components: Streaming
>    Affects Versions: 0.10
>            Reporter: Aljoscha Krettek
>            Assignee: Gyula Fora
>            Priority: Blocker
>
> When changing the DOP from 3 to 1 in StatefulOperatorTest.apiTest() the test fails. The reason seems to be that the element is not properly set when chaining is happening.
> Also, requiring this:
> {code}
> headContext.setNextInput(nextRecord);
> streamOperator.processElement(nextRecord);
> {code}
> to be called seems rather fragile. Why not set the element in {{processElement()}}. This would also make for cleaner encapsulation, since now all outside code must assume that operators have a {{StreamingRuntimeContext}} on which they set the next element.
> The state/keyed state machinery seems dangerously undertested.



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