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https://issues.apache.org/jira/browse/BEAM-11143?focusedWorklogId=507024&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-507024
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ASF GitHub Bot logged work on BEAM-11143:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 03/Nov/20 14:12
Start Date: 03/Nov/20 14:12
Worklog Time Spent: 10m
Work Description: kennknowles merged pull request #13206:
URL: https://github.com/apache/beam/pull/13206
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Issue Time Tracking
-------------------
Worklog Id: (was: 507024)
Time Spent: 40m (was: 0.5h)
> AfterWatermark can leak state for the late trigger when merging windows
> -----------------------------------------------------------------------
>
> Key: BEAM-11143
> URL: https://issues.apache.org/jira/browse/BEAM-11143
> Project: Beam
> Issue Type: Bug
> Components: runner-core
> Reporter: Sam Whittle
> Assignee: Sam Whittle
> Priority: P2
> Fix For: 2.26.0
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> AfterWatermarkStateMachine attempts to clear the late trigger state when
> merging and the early trigger is not closed in some windows. However it
> appears to clear the state corresponding to the new window, not all of the
> states for the input windows. This leaks the state which can lead to
> unbounded pipeline state buildup.
> https://github.com/apache/beam/blob/68d6c8e6243b1d8f392840273f886276e2a8baff/runners/core-java/src/main/java/org/apache/beam/runners/core/triggers/AfterWatermarkStateMachine.java#L133
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