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https://issues.apache.org/jira/browse/FLINK-35412?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17912425#comment-17912425
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Zakelly Lan commented on FLINK-35412:
-------------------------------------
We found this problematic by only leaving one mail in the mailbox, which may
cause deadlock when `yield()`. So I propose to revert this optimization. Will
add back when we are sure this is useful and performs well.
> Batch execution of async state request callback
> -----------------------------------------------
>
> Key: FLINK-35412
> URL: https://issues.apache.org/jira/browse/FLINK-35412
> Project: Flink
> Issue Type: Sub-task
> Components: Runtime / State Backends, Runtime / Task
> Reporter: Zakelly Lan
> Assignee: Zakelly Lan
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.0-preview
>
>
> There is one mail for each callback when async state result returns. One
> possible optimization is to encapsulate multiple callbacks into one mail.
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