[GitHub] [beam] kennknowles opened a new issue, #19326: Triggers not working for bounded data

[GitBox <gi...@apache.org>]

kennknowles opened a new issue, #19326:
URL: https://github.com/apache/beam/issues/19326

   pCollection
    .apply(Window.<String\>into(FixedWindows.of(Duration.millis(100)))
    .triggering(Repeatedly.forever(AfterPane.elementCountAtLeast(1000)))
    .discardingFiredPanes().withAllowedLateness(Duration.ZERO))
    .apply(TextIO.write().withWindowedWrites().withNumShards(1).to('gs-path'));
   
   Here pCollection is a *bounded* PCollection. I'm trying to break it into files of 1000 roughly, but all I get is 2 files one having 1000 other having the rest of the data.
   If instead I do:-
   
   pCollection
   .apply(new GlobalWindow())
   .triggering(Repeatedly.forever(AfterPane.elementCountAtLeast(1000)))
   .discardingFiredPanes().withAllowedLateness(Duration.ZERO))
   .apply(TextIO.write().withWindowedWrites().withNumShards(1).to('gs-path'));
   
   
   I get just one file. 
   Both of the above cases should have conceptually divided the records into chucks of 1000 to be written in a file.
   
   Imported from Jira [BEAM-6743](https://issues.apache.org/jira/browse/BEAM-6743). Original Jira may contain additional context.
   Reported by: aditya.guru149.


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