[jira] [Work logged] (BEAM-9839) OnTimerContext should not create a new one when processing each element/timer in FnApiDoFnRunner

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/BEAM-9839?focusedWorklogId=465815&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-465815 ]

ASF GitHub Bot logged work on BEAM-9839:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 03/Aug/20 16:55
            Start Date: 03/Aug/20 16:55
    Worklog Time Spent: 10m 
      Work Description: robertwb commented on a change in pull request #12391:
URL: https://github.com/apache/beam/pull/12391#discussion_r464538362



##########
File path: sdks/java/harness/src/main/java/org/apache/beam/fn/harness/FnApiDoFnRunner.java
##########
@@ -2118,8 +2113,8 @@ public TimeDomain timeDomain(DoFn<InputT, OutputT> doFn) {
     }
 
     @Override
-    public K key() {
-      return key;
+    public Object key() {

Review comment:
       Due to type erasure, we don't have to know it at initialization time, but we do know it when passed to the user (and it'd be better to give them something properly typed.) 




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Issue Time Tracking
-------------------

    Worklog Id:     (was: 465815)
    Time Spent: 40m  (was: 0.5h)

> OnTimerContext should not create a new one when processing each element/timer in FnApiDoFnRunner
> ------------------------------------------------------------------------------------------------
>
>                 Key: BEAM-9839
>                 URL: https://issues.apache.org/jira/browse/BEAM-9839
>             Project: Beam
>          Issue Type: Improvement
>          Components: sdk-java-harness
>            Reporter: Rehman Murad Ali
>            Priority: P2
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> {color:#24292e}The intent of these Context objects was to not create a new one when processing each element/timer and instead to reference a member variable as can be seen in:{color}
>  
> Discussed here :
> https://github.com/apache/beam/pull/11154/#discussion_r416023080
>  
>  
>  



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