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https://issues.apache.org/jira/browse/ARROW-10106?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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James Duong closed ARROW-10106.
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> [FlightRPC][Java] Expose onIsReady() callback on OutboundStreamListener
> -----------------------------------------------------------------------
>
> Key: ARROW-10106
> URL: https://issues.apache.org/jira/browse/ARROW-10106
> Project: Apache Arrow
> Issue Type: Improvement
> Components: FlightRPC, Java
> Reporter: James Duong
> Assignee: James Duong
> Priority: Major
> Labels: flight, pull-request-available
> Fix For: 3.0.0
>
> Time Spent: 2h
> Remaining Estimate: 0h
>
> OutboundStreamListener has a method isReady() that FlightProducers need to
> poll during implementations of getStream() to avoid buffering too much data.
> An enhancement would be to allow setting a callback to run (for example,
> notifying a CountdownLatch) so that FlightProducer implementations don't need
> to busy wait.
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