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https://issues.apache.org/jira/browse/BEAM-10329?focusedWorklogId=451678&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-451678
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ASF GitHub Bot logged work on BEAM-10329:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 26/Jun/20 18:25
            Start Date: 26/Jun/20 18:25
    Worklog Time Spent: 10m 
      Work Description: y1chi commented on pull request #12096:
URL: https://github.com/apache/beam/pull/12096#issuecomment-650328436


   R: @lukecwik 


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

            Worklog Id:     (was: 451678)
    Remaining Estimate: 0h
            Time Spent: 10m

> Dataflow runner does not reserve timestamp of Create.Timestamped() in batch 
> stateful dofn
> -----------------------------------------------------------------------------------------
>
>                 Key: BEAM-10329
>                 URL: https://issues.apache.org/jira/browse/BEAM-10329
>             Project: Beam
>          Issue Type: Bug
>          Components: runner-dataflow
>            Reporter: Yichi Zhang
>            Assignee: Yichi Zhang
>            Priority: P2
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> When run a test pipeline such as 
> {code:java}
> public void testTimestampedValue() throws Exception {
>       final String timerId = "foo";
>       DoFn<KV<String, Long>, KV<Long, Instant>> statefn =
>           new DoFn<KV<String, Long>, KV<Long, Instant>>() {
>             @TimerId(timerId)
>             private final TimerSpec spec = 
> TimerSpecs.timer(TimeDomain.EVENT_TIME);
>             @ProcessElement
>             public void processElement(
>                 @TimerId(timerId) Timer timer,
>                 @Timestamp Instant timestamp,
>                 OutputReceiver<KV<Long, Instant>> r) {
>               r.output(KV.of(3L, timestamp));
>             }
>             @OnTimer(timerId)
>             public void onTimer(@Timestamp Instant timestamp, 
> OutputReceiver<KV<Long, Instant>> r) {
>               // do nothing. Since whether timer is involved doesn’t make 
> difference
>             }
>           };
>       PCollection<KV<Long, Instant>> output =
>           pipeline
>               .apply(Create.timestamped(TimestampedValue.of(KV.of("hello", 
> 37L), new Instant(123L))))
>               .apply(ParDo.of(statefn));
>       PAssert.that(output).containsInAnyOrder(KV.of(3L, new Instant(123L)));
>       pipeline.run();
> }
> {code}
> On dataflow with fnapi, the timestamp of output in PAssert won't match.



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