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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-1595) Add a complex integration test for Streaming API
Date Mon, 04 May 2015 08:21:06 GMT

    [ https://issues.apache.org/jira/browse/FLINK-1595?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14526404#comment-14526404
] 

ASF GitHub Bot commented on FLINK-1595:
---------------------------------------

Github user mbalassi commented on the pull request:

    https://github.com/apache/flink/pull/520#issuecomment-98628873
  
    Hey,
    
    Sorry for not attending to this for a long time. It needed a rebase for the API of the
chaining. Now that I have updated that the test throws the following NPE:
    
    Caused by: java.lang.NullPointerException
    	at org.apache.flink.streaming.api.complex.ComplexIntegrationTest$MyTimestamp.getTimestamp(ComplexIntegrationTest.java:659)
    	at org.apache.flink.streaming.api.complex.ComplexIntegrationTest$MyTimestamp.getTimestamp(ComplexIntegrationTest.java:654)
    	at org.apache.flink.streaming.api.windowing.helper.TimestampWrapper.getTimestamp(TimestampWrapper.java:34)
    	at org.apache.flink.streaming.api.windowing.windowbuffer.SlidingTimePreReducer.afterEmit(SlidingTimePreReducer.java:71)
    	at org.apache.flink.streaming.api.windowing.windowbuffer.SlidingPreReducer.emitWindow(SlidingPreReducer.java:59)
    	... 7 more
    
    It would be nice if we could separate the individual tests, so it is easier to track an
exception like that. Maybe a solution similar to `MiltipleProgramsTestBase` for streaming
would do the trick.
    
    @szape, could you please do an update with these, then I'd merge it asap so that it does
not get outdated again. Thanks.


> Add a complex integration test for Streaming API
> ------------------------------------------------
>
>                 Key: FLINK-1595
>                 URL: https://issues.apache.org/jira/browse/FLINK-1595
>             Project: Flink
>          Issue Type: Task
>          Components: Streaming
>            Reporter: Gyula Fora
>            Assignee: Péter Szabó
>              Labels: Starter
>
> The streaming tests currently lack a sophisticated integration test that would test many
api features at once. 
> This should include different merging, partitioning, grouping, aggregation types, as
well as windowing and connected operators.
> The results should be tested for correctness.
> A test like this would help identifying bugs that are hard to detect by unit-tests.



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