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https://issues.apache.org/jira/browse/STORM-1873?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15319973#comment-15319973
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ASF GitHub Bot commented on STORM-1873:
---------------------------------------

Github user satishd commented on a diff in the pull request:

    https://github.com/apache/storm/pull/1453#discussion_r66190593
  
    --- Diff: 
storm-core/test/jvm/org/apache/storm/topology/WindowedBoltExecutorTest.java ---
    @@ -28,19 +28,20 @@
     import org.apache.storm.tuple.Tuple;
     import org.apache.storm.tuple.TupleImpl;
     import org.apache.storm.tuple.Values;
    +import org.apache.storm.utils.Time;
     import org.apache.storm.windowing.TupleWindow;
     import org.apache.storm.windowing.WaterMarkEvent;
    +import org.hamcrest.Matcher;
     import org.junit.Before;
     import org.junit.Test;
    +import org.mockito.Matchers;
     import org.mockito.Mockito;
     
    -import java.util.ArrayList;
    -import java.util.Collections;
    -import java.util.HashMap;
    -import java.util.List;
    -import java.util.Map;
    +import java.util.*;
    --- End diff --
    
    minor nit: Better not to have wildcard imports.


> Reemit late tuples in windowed mode
> -----------------------------------
>
>                 Key: STORM-1873
>                 URL: https://issues.apache.org/jira/browse/STORM-1873
>             Project: Apache Storm
>          Issue Type: Improvement
>          Components: storm-core
>            Reporter: Balazs Kossovics
>
> Currently late tuples are just logged (and acknowledged in the coming 1.0.2), 
> but in our  use-case it would be desirable to emit them on a different stream 
> than the default.
> I implemented a first version, where every windowed bolt are going to have a 
> '_late' stream by default, and component-specific parameter 
> (Config.TOPOLOGY_BOLTS_EMIT_LATE_TUPLE) the definer of the bolt could turn on 
> or off the emission of the late tuples on this stream. 
> One could turn on the emission of late tuples with a builder method like this:
> {code:title=MyWindowedBolt.java|borderStyle=solid}
> new MyWindowedBolt()
>         .withTimestampField("timestamp")
>         .withLateTupleEmission(true)
>         .withWindow(
>                 new BaseWindowedBolt.Duration(1, TimeUnit.MINUTES),
>                 new BaseWindowedBolt.Duration(1, TimeUnit.SECONDS)
>         );
> {code}
> What do you think about it?



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