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From "Etienne Chauchot (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (BEAM-2499) Support Custom Windows in Spark runner
Date Fri, 21 Jul 2017 12:41:00 GMT

     [ https://issues.apache.org/jira/browse/BEAM-2499?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Etienne Chauchot updated BEAM-2499:
-----------------------------------
    Summary: Support Custom Windows in Spark runner  (was: Fail to merge Custom Windows in
Spark runner)

> Support Custom Windows in Spark runner
> --------------------------------------
>
>                 Key: BEAM-2499
>                 URL: https://issues.apache.org/jira/browse/BEAM-2499
>             Project: Beam
>          Issue Type: Bug
>          Components: runner-spark
>            Reporter: Etienne Chauchot
>            Assignee: Etienne Chauchot
>
> If we extend {{IntervalWindow}} and we try to merge these custom windows like in this
PR:
> https://github.com/apache/beam/pull/3286
> Then spark runner fails with 
> {{org.apache.beam.sdk.Pipeline$PipelineExecutionException: java.lang.ClassCastException:
org.apache.beam.sdk.transforms.windowing.IntervalWindow cannot be cast to org.apache.beam.sdk.transforms.windowing.MergingCustomWindowsTest$CustomWindow}}
> It seems to be because of the cast to {{IntervalWindow}} there: https://github.com/apache/beam/blob/master/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/SparkGlobalCombineFn.java#L111



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