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https://issues.apache.org/jira/browse/BEAM-12276?focusedWorklogId=592891&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-592891
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ASF GitHub Bot logged work on BEAM-12276:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 04/May/21 17:46
Start Date: 04/May/21 17:46
Worklog Time Spent: 10m
Work Description: reuvenlax commented on pull request #14718:
URL: https://github.com/apache/beam/pull/14718#issuecomment-832125323
In that case, the check was intended to be based on the timestamp of the
element being processed by ProcessElement, not based on the input
watermark. Was this not the case?
On Tue, May 4, 2021 at 10:44 AM Jan Lukavský ***@***.***>
wrote:
> There is no fireTimestamp until the timer is actually fired. The use case
> sets the timer in @ProcessElement.
> Timer.withOutputTimestamp().offset(Duration.ZERO).setRelative() should
> fire as soon as watermark moves, the fireTimestamp of the set timer is the
> current value of the input watermark (presumably, I didn't investigate the
> code, but it makes sense). Whether or not this call throws exception
> depends on the current value of the input watermark (or the base for
> relative event time timers, may it be anything).
> If you look at the test case I think there is nothing else left to do to
> make it succeed without changing the precondition check (or making input
> watermark available to the user somehow).
> Another note is that setting watermarkhold to time T + delta is
> semantically a no-op, the output watermark cannot be ahead of the input
> watermark, so that doesn't break anything.
>
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Issue Time Tracking
-------------------
Worklog Id: (was: 592891)
Time Spent: 2h (was: 1h 50m)
> Timer.withOutputTimestamp(Instant).offset(Duration).setRelative() might fail
> unexpectedly
> -----------------------------------------------------------------------------------------
>
> Key: BEAM-12276
> URL: https://issues.apache.org/jira/browse/BEAM-12276
> Project: Beam
> Issue Type: Bug
> Components: sdk-java-core
> Affects Versions: 2.30.0
> Reporter: Jan Lukavský
> Assignee: Jan Lukavský
> Priority: P2
> Time Spent: 2h
> Remaining Estimate: 0h
>
> We check that timer's output timestamp is not before timer fire timestamp.
> The fire timestamp is unknown to user when setting a relative timer and
> therefore cannot be checked in user code.
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