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https://issues.apache.org/jira/browse/BEAM-6329?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maximilian Michels closed BEAM-6329.
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Resolution: Fixed
> State for portable timers can interfere with user state
> -------------------------------------------------------
>
> Key: BEAM-6329
> URL: https://issues.apache.org/jira/browse/BEAM-6329
> Project: Beam
> Issue Type: Bug
> Components: runner-flink
> Affects Versions: 2.9.0
> Reporter: Maximilian Michels
> Assignee: Maximilian Michels
> Priority: Critical
> Labels: portability-flink
> Fix For: 2.10.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> The current active key needs to be set on Flink's state backend to support
> deleting pending timers on timer registration or firing. A keyed map for
> pending timers is necessary because Flink only allows deleting/resetting
> timers by their original time, not by their ids.
> Setting the current active key can interfere with accessing user-defined
> state, but can also interfere when a timer is set at the same time that a
> timer fires. In cases with a key initialized by the state requests, this
> would have caused pending timers to be associated with the wrong key which
> would have led to problems deleting / resetting them.
> Related to: BEAM-4681 BEAM-867
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