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https://issues.apache.org/jira/browse/BEAM-3061?focusedWorklogId=263805&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-263805
 ]

ASF GitHub Bot logged work on BEAM-3061:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 20/Jun/19 14:30
            Start Date: 20/Jun/19 14:30
    Worklog Time Spent: 10m 
      Work Description: steveniemitz commented on pull request #7805: 
[BEAM-3061] Done notifications for BigtableIO.Write
URL: https://github.com/apache/beam/pull/7805#discussion_r295834654
 
 

 ##########
 File path: 
sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/bigtable/BigtableIO.java
 ##########
 @@ -466,7 +469,7 @@ public String toString() {
   @Experimental(Experimental.Kind.SOURCE_SINK)
   @AutoValue
   public abstract static class Write
-      extends PTransform<PCollection<KV<ByteString, Iterable<Mutation>>>, 
PDone> {
+      extends PTransform<PCollection<KV<ByteString, Iterable<Mutation>>>, 
PCollection<Void>> {
 
 Review comment:
   the class is marked as experimental, which means it can have 
backwards-incompatible changes right? ;)
   
   I'd be ok with either way, but if we're going by the letter of the 
`@Experimental` rules, it seems like it'd be cleaner to just change the 
interface rather than adding a new option.
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 263805)
    Time Spent: 8.5h  (was: 8h 20m)

> BigtableIO should support emitting a sentinel "done" value when a bundle 
> completes
> ----------------------------------------------------------------------------------
>
>                 Key: BEAM-3061
>                 URL: https://issues.apache.org/jira/browse/BEAM-3061
>             Project: Beam
>          Issue Type: Improvement
>          Components: io-java-gcp
>            Reporter: Steve Niemitz
>            Assignee: Steve Niemitz
>            Priority: Major
>          Time Spent: 8.5h
>  Remaining Estimate: 0h
>
> There was some discussion of this on the dev@ mailing list [1].  This 
> approach was taken based on discussion there.
> [1] 
> https://lists.apache.org/thread.html/949b33782f722a9000c9bf9e37042739c6fd0927589b99752b78d7bd@%3Cdev.beam.apache.org%3E



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