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https://issues.apache.org/jira/browse/BEAM-7951?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17002462#comment-17002462
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Luke Cwik commented on BEAM-7951:
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There is still outstanding work:
# to apply my [last reviews comment
changes|https://github.com/apache/beam/pull/9979#pullrequestreview-335982782]
# to support different wirecodersettings when there are multiple
inputs/outputs with different windowing information such as when timers are
being used or whenever there is a Window.into() transform contained within the
ExecutableStage.
> Allow runner to configure customization WindowedValue coder such as
> ValueOnlyWindowedValueCoder
> -----------------------------------------------------------------------------------------------
>
> Key: BEAM-7951
> URL: https://issues.apache.org/jira/browse/BEAM-7951
> Project: Beam
> Issue Type: Sub-task
> Components: java-fn-execution
> Reporter: sunjincheng
> Assignee: sunjincheng
> Priority: Major
> Time Spent: 9h
> Remaining Estimate: 0h
>
> The coder of WindowedValue cannot be configured and it’s always
> FullWindowedValueCoder. We don't need to serialize the timestamp, window and
> pane properties in Flink and so it will be better to make the coder
> configurable (i.e. allowing to use ValueOnlyWindowedValueCoder)
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