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https://issues.apache.org/jira/browse/FLINK-28635?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17577678#comment-17577678
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Mason Chen commented on FLINK-28635:
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I think this is a duplicate of https://issues.apache.org/jira/browse/FLINK-27479
> HybridSourceReader availabilityFuture always completed
> ------------------------------------------------------
>
> Key: FLINK-28635
> URL: https://issues.apache.org/jira/browse/FLINK-28635
> Project: Flink
> Issue Type: Bug
> Components: Connectors / Common
> Affects Versions: 1.15.0, 1.15.1
> Reporter: hongfei zhang
> Priority: Major
>
> HybridSourceReader may contains multi SourceReader.
> AvailabilityFuture is variable in some reader like kafka, but
> AvailabilityFuture is not always changing in HybridSourceReader.
> This leads to a problem:
> * task busy time is calculated based on idle time
> * idle time is based on operator AvailabilityFuture
> * When the idle time is constant, it will always be busy
>
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