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https://issues.apache.org/jira/browse/BEAM-7951?focusedWorklogId=354604&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-354604
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ASF GitHub Bot logged work on BEAM-7951:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 05/Dec/19 19:05
            Start Date: 05/Dec/19 19:05
    Worklog Time Spent: 10m 
      Work Description: lukecwik commented on pull request #9979: [BEAM-7951] 
Allow runner to configure customization WindowedValue coder.
URL: https://github.com/apache/beam/pull/9979#discussion_r354473388
 
 

 ##########
 File path: 
runners/core-construction-java/src/main/java/org/apache/beam/runners/core/construction/graph/ExecutableStage.java
 ##########
 @@ -69,6 +72,14 @@
    */
   Environment getEnvironment();
 
+  /**
+   * Returns the {@link WireCoderSetting} this stage executes in.
+   *
+   * <p>An {@link WireCoderSetting} consists of settings which is used to 
configure the type of the
 
 Review comment:
   ```suggestion
      * <p>A {@link WireCoderSetting} consists of settings which is used to 
configure the type of the
   ```
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 354604)

> 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: 5h 10m
>  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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