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https://issues.apache.org/jira/browse/BEAM-10329?focusedWorklogId=451718&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-451718
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ASF GitHub Bot logged work on BEAM-10329:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 26/Jun/20 20:01
Start Date: 26/Jun/20 20:01
Worklog Time Spent: 10m
Work Description: lukecwik commented on pull request #12096:
URL: https://github.com/apache/beam/pull/12096#issuecomment-650372684
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Issue Time Tracking
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Worklog Id: (was: 451718)
Time Spent: 20m (was: 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: 20m
> 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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