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https://issues.apache.org/jira/browse/BEAM-8550?focusedWorklogId=365822&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-365822
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ASF GitHub Bot logged work on BEAM-8550:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 03/Jan/20 12:02
            Start Date: 03/Jan/20 12:02
    Worklog Time Spent: 10m 
      Work Description: je-ik commented on issue #8774: [BEAM-8550] Requires 
time sorted input
URL: https://github.com/apache/beam/pull/8774#issuecomment-570554091
 
 
   @JozoVilcek I have resolved some issues mentioned. I have come across issue 
in DirectRunner (not dropping late data), which when resolved might enable 
adding more tests verifying that the annotation does not imply dropping more 
data. 
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 365822)
    Time Spent: 7h 50m  (was: 7h 40m)

> @RequiresTimeSortedInput DoFn annotation
> ----------------------------------------
>
>                 Key: BEAM-8550
>                 URL: https://issues.apache.org/jira/browse/BEAM-8550
>             Project: Beam
>          Issue Type: New Feature
>          Components: beam-model, sdk-java-core
>            Reporter: Jan Lukavský
>            Assignee: Jan Lukavský
>            Priority: Major
>          Time Spent: 7h 50m
>  Remaining Estimate: 0h
>
> Implement new annotation {{@RequiresTimeSortedInput}} for stateful DoFn as 
> described in [design 
> document|https://docs.google.com/document/d/1ObLVUFsf1NcG8ZuIZE4aVy2RYKx2FfyMhkZYWPnI9-c/edit?usp=sharing].
>  First implementation will assume that:
>   - time is defined by timestamp in associated WindowedValue
>   - allowed lateness is explicitly zero and all late elements are dropped 
> (due to being out of order)
> The above properties are considered temporary and will be resolved by 
> subsequent extensions (backwards compatible).



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