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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (BEAM-2019) Count.globally() requires default values for non-GlobalWindows
Date Thu, 27 Apr 2017 02:02:04 GMT

    [ https://issues.apache.org/jira/browse/BEAM-2019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15985875#comment-15985875
] 

ASF GitHub Bot commented on BEAM-2019:
--------------------------------------

Github user asfgit closed the pull request at:

    https://github.com/apache/beam/pull/2603


> Count.globally() requires default values for non-GlobalWindows
> --------------------------------------------------------------
>
>                 Key: BEAM-2019
>                 URL: https://issues.apache.org/jira/browse/BEAM-2019
>             Project: Beam
>          Issue Type: Bug
>          Components: sdk-java-core
>            Reporter: Xu Mingmin
>            Assignee: Xu Mingmin
>            Priority: Minor
>
> Here's my code:
> {code}
> .apply(Window.<String>into(FixedWindows.of(Duration.standardHours(1)))  .triggering(Repeatedly.forever(AfterProcessingTime.pastFirstElementInPane().plusDelayOf(Duration.standardMinutes(1))))
>           .withAllowedLateness(Duration.standardMinutes(10))
>           .accumulatingFiredPanes()
>           )
> .apply(Count.<String>globally());
> {code}
> And the error message as below:
> {code}
> Exception in thread "main" java.lang.IllegalStateException: Default values are not supported
in Combine.globally() if the output PCollection is not windowed by GlobalWindows. Instead,
use Combine.globally().withoutDefaults() to output an empty PCollection if the input PCollection
is empty, or Combine.globally().asSingletonView() to get the default output of the CombineFn
if the input PCollection is empty.
> 	at org.apache.beam.sdk.transforms.Combine$Globally.expand(Combine.java:1463)
> 	at org.apache.beam.sdk.transforms.Combine$Globally.expand(Combine.java:1336)
> 	at org.apache.beam.sdk.Pipeline.applyInternal(Pipeline.java:420)
> 	at org.apache.beam.sdk.Pipeline.applyTransform(Pipeline.java:334)
> 	at org.apache.beam.sdk.values.PCollection.apply(PCollection.java:154)
> {code}



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