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https://issues.apache.org/jira/browse/FLINK-21278?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Flink Jira Bot updated FLINK-21278:
-----------------------------------
Labels: auto-deprioritized-critical auto-deprioritized-major
auto-deprioritized-minor pull-request-available (was:
auto-deprioritized-critical auto-deprioritized-major pull-request-available
stale-minor)
Priority: Not a Priority (was: Minor)
This issue was labeled "stale-minor" 7 days ago and has not received any
updates so it is being deprioritized. If this ticket is actually Minor, please
raise the priority and ask a committer to assign you the issue or revive the
public discussion.
> NullpointExecption error is reported when using the evictor method to filter
> the data before the window calculation
> -------------------------------------------------------------------------------------------------------------------
>
> Key: FLINK-21278
> URL: https://issues.apache.org/jira/browse/FLINK-21278
> Project: Flink
> Issue Type: Bug
> Components: API / DataStream
> Affects Versions: 1.12.1
> Reporter: HunterHunter
> Priority: Not a Priority
> Labels: auto-deprioritized-critical, auto-deprioritized-major,
> auto-deprioritized-minor, pull-request-available
>
> When I use evictor() method to filter the data before a window is triggered,
> if there is no data that meets the conditions, a nullpointExecption error
> will be reported.
> This problem occurs in the ReduceApplyWindowFunction.apply method.
> So I think if there is no data to calculate whether it can not trigger the
> calculation, or judge whether it is null before transmitting the calculation
> result
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