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https://issues.apache.org/jira/browse/ARROW-3328?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16628326#comment-16628326
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Wes McKinney commented on ARROW-3328:
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Good point. I guess if you need a "leg" identifier this could be serialized in
the ticket
> [Flight] Allow for optional unique flight identifier to be sent with
> FlightGetInfo
> ----------------------------------------------------------------------------------
>
> Key: ARROW-3328
> URL: https://issues.apache.org/jira/browse/ARROW-3328
> Project: Apache Arrow
> Issue Type: Improvement
> Components: FlightRPC
> Reporter: Wes McKinney
> Priority: Major
> Fix For: 0.12.0
>
>
> There could either be
> * A global identifier for the entire flight
> * Endpoint-specific identifiers
> A client could use these unique identifier to perform other kinds of actions.
> An example would be retrieving logs or statistics about a get -- you could
> see time spent writing the dataset to gRPC or time spent constructing the
> dataset before handing off to the gRPC write layer
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