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https://issues.apache.org/jira/browse/BEAM-8645?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17121812#comment-17121812
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Kenneth Knowles commented on BEAM-8645:
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This issue is assigned but has not received an update in 30 days so it has been
labeled "stale-assigned". If you are still working on the issue, please give an
update and remove the label. If you are no longer working on the issue, please
unassign so someone else may work on it. In 7 days the issue will be
automatically unassigned.
> TimestampCombiner incorrect in beam python
> ------------------------------------------
>
> Key: BEAM-8645
> URL: https://issues.apache.org/jira/browse/BEAM-8645
> Project: Beam
> Issue Type: Bug
> Components: sdk-py-core
> Reporter: Ruoyun Huang
> Assignee: Ruoyun Huang
> Priority: P2
> Labels: stale-assigned
> Time Spent: 10h 20m
> Remaining Estimate: 0h
>
> When we have a TimestampValue on combine:
> {code:java}
> main_stream = (p
> | 'main TestStream' >> TestStream()
> .add_elements([window.TimestampedValue(('k', 100), 0)])
> .add_elements([window.TimestampedValue(('k', 400), 9)])
> .advance_watermark_to_infinity()
> | 'main windowInto' >> beam.WindowInto(
> window.FixedWindows(10),
> timestamp_combiner=TimestampCombiner.OUTPUT_AT_LATEST) |
> 'Combine' >> beam.CombinePerKey(sum))
> The expect timestamp should be:
> LATEST: (('k', 500), Timestamp(9)),
> EARLIEST: (('k', 500), Timestamp(0)),
> END_OF_WINDOW: (('k', 500), Timestamp(10)),
> But current py streaming gives following results:
> LATEST: (('k', 500), Timestamp(10)),
> EARLIEST: (('k', 500), Timestamp(10)),
> END_OF_WINDOW: (('k', 500), Timestamp(9.99999999)),
> More details and discussions:
> https://lists.apache.org/thread.html/d3af1f2f84a2e59a747196039eae77812b78a991f0f293c717e5f4e1@%3Cdev.beam.apache.org%3E
> {code}
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