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ASF GitHub Bot logged work on BEAM-8645: ---------------------------------------- Author: ASF GitHub Bot Created on: 13/Nov/19 00:44 Start Date: 13/Nov/19 00:44 Worklog Time Spent: 10m Work Description: HuangLED commented on pull request #10081: [BEAM-8645] A test case to show the expected behavior of TimestampCombiner. URL: https://github.com/apache/beam/pull/10081 This PR does not resolve BEAM-8645, but rather shows how to reproduce the [likely] bug. ------------------------ Thank you for your contribution! Follow this checklist to help us incorporate your contribution quickly and easily: - [ X] [**Choose reviewer(s)**](https://beam.apache.org/contribute/#make-your-change) and mention them in a comment (`R: @username`). - [ X] Format the pull request title like `[BEAM-XXX] Fixes bug in ApproximateQuantiles`, where you replace `BEAM-XXX` with the appropriate JIRA issue, if applicable. 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For queries about this service, please contact Infrastructure at: us...@infra.apache.org Issue Time Tracking ------------------- Worklog Id: (was: 342317) Remaining Estimate: 0h Time Spent: 10m > 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 > Priority: Major > Time Spent: 10m > 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} -- This message was sent by Atlassian Jira (v8.3.4#803005)