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https://issues.apache.org/jira/browse/BEAM-11104?focusedWorklogId=752446&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-752446
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ASF GitHub Bot logged work on BEAM-11104:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 04/Apr/22 19:07
            Start Date: 04/Apr/22 19:07
    Worklog Time Spent: 10m 
      Work Description: damccorm commented on code in PR #17265:
URL: https://github.com/apache/beam/pull/17265#discussion_r842056277


##########
sdks/go/pkg/beam/core/funcx/fn.go:
##########
@@ -631,6 +647,8 @@ func nextRetState(cur retState, transition ReturnKind) 
(retState, error) {
                return -1, errEventTimeRetPrecedence
        case RetValue, RetRTracker:
                return rsOutput, nil
+       case RetProcessContinuation:
+               return rsProcessContinuation, nil

Review Comment:
   From a technical standpoint this LGTM, I'm not so sure about the ordering of 
the changes though. Specifically, what I'm worried about is the potential for:
   
   1) This PR takes away the validation that says you can't have a 
ProcessContinuation type as a return type.
   2) The Sdk gets cut/released with version X.
   3) This PR gets completed and we doc the change for version Y.
   4) A user still on version X sees the doc changes and tries to use the 
ProcessContinuation, getting an error at pipeline run time (or even worse, 
silently seeing no errors)
   
   While I'm 100% all about breaking PRs up, as a rule I would prefer we don't 
expose the user facing API until the last incremental PR so that we avoid the 
potential for something like that happening. Basically, I don't want to 
_expose_ any incomplete features.
   
   I would prefer we get rid of these 2 lines (or at least comment them out) so 
that there is no ambiguity about what is supported and users get a pipeline 
construction time error indicating exactly what the problem is.





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

    Worklog Id:     (was: 752446)
    Time Spent: 2h  (was: 1h 50m)

> [Go SDK] DoFn Self Checkpointing
> --------------------------------
>
>                 Key: BEAM-11104
>                 URL: https://issues.apache.org/jira/browse/BEAM-11104
>             Project: Beam
>          Issue Type: Sub-task
>          Components: sdk-go
>            Reporter: Robert Burke
>            Priority: P3
>          Time Spent: 2h
>  Remaining Estimate: 0h
>
> Allow SplittableDoFns to self checkpoint.
> (To be updated once [https://github.com/apache/beam/pull/13160] is merged and 
> the programming guide updated with SDF content.)



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