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https://issues.apache.org/jira/browse/FLINK-6199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17328801#comment-17328801
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Flink Jira Bot commented on FLINK-6199:
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This major issue is unassigned and itself and all of its Sub-Tasks have not
been updated for 30 days. So, it has been labeled "stale-major". If this ticket
is indeed "major", please either assign yourself or give an update. Afterwards,
please remove the label. In 7 days the issue will be deprioritized.
> Single outstanding Async I/O operation per key
> ----------------------------------------------
>
> Key: FLINK-6199
> URL: https://issues.apache.org/jira/browse/FLINK-6199
> Project: Flink
> Issue Type: Improvement
> Components: API / DataStream
> Reporter: Jamie Grier
> Priority: Major
> Labels: stale-major
>
> I would like to propose we extend the Async I/O semantics a bit such that a
> user can guarantee a single outstanding async request per key.
> This would allow a user to order async requests per key while still achieving
> the throughput benefits of using Async I/O in the first place.
> This is essential for operations where stream order is important but we still
> need to use Async operations to interact with an external system in a
> performant way.
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