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https://issues.apache.org/jira/browse/CALCITE-663?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14481702#comment-14481702
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Nick Dimiduk commented on CALCITE-663:
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{quote}
bq. One goal we have is to allow for session-less utilization of the query
server.
That's a big one. We should discuss in a separate JIRA case.
{quote}
I created CALCITE-668 for further discussion.
> Add CreateConnectionRequest and protocol version to Avatica protocol
> --------------------------------------------------------------------
>
> Key: CALCITE-663
> URL: https://issues.apache.org/jira/browse/CALCITE-663
> Project: Calcite
> Issue Type: Bug
> Reporter: Julian Hyde
> Assignee: Julian Hyde
> Labels: avatica
>
> Add protocol version to Avatica protocol, to allow forwards and backwards
> compatibility.
> The first request should be a CreateConnectionRequest, let's add the
> attributes there. I propose:
> * CreateConnectionRequest.requestedProtocolType e.g. "json"
> * CreateConnectionRequest.requestedProtocolVersion e.g. "1.2.0"
> * CreateConnectionRequest.driverVersion
> * CreateConnectionRequest.driverName e.g.
> "org.apache.calcite.avatica.remote.Driver"
> * CreateConnectionResponse.protocolType
> * CreateConnectionResponse.protocolVersion
> * CreateConnectionResponse.databaseVersion
> There is currently no CreateConnectionRequest.
> Certain servers configurations would continue to allow connections to be
> implicitly created, but using an explicit CreateConnectionRequest would
> always be possible.
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