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https://issues.apache.org/jira/browse/CALCITE-4727?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17397644#comment-17397644
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John Bodley commented on CALCITE-4727:
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I was testing using {{avatica-1.17.0.jar}} (somewhat akin to
[these|https://community.tableau.com/s/question/0D54T00000OPNZtSAP/how-to-connect-tableau-with-druid-latest-version-of-tableau-2020]
instructions) and Tableau was inoperable without including a `response` field
within the RpcMetadata object. Maybe this logic has changed.
That said [~elserj] per your comment the code snippet does say
{{RpcMetadataResponse}}, i.e., includes the term `response` and per
[here|https://github.com/apache/calcite-avatica/blob/89e0deb510311b85b8c8bacde6d2ff70c309930e/core/src/main/java/org/apache/calcite/avatica/remote/Service.java#L2668-L2678]
(as mentioned in the issue description) it seems like the RpcMetdaata is
somewhat of an atypical
[miscellaneous|https://calcite.apache.org/avatica/docs/json_reference.html#miscellaneous]
type.
> Possible incorrect RpcMetadata JSON reference
> ---------------------------------------------
>
> Key: CALCITE-4727
> URL: https://issues.apache.org/jira/browse/CALCITE-4727
> Project: Calcite
> Issue Type: Bug
> Components: avatica
> Reporter: John Bodley
> Priority: Trivial
>
> Per [CALCITE-4367|https://issues.apache.org/jira/browse/CALCITE-4367] the
> RpMetadata JSON reference is missing the required `response` field. As
> discussed in the issue and per
> [here|https://github.com/apache/calcite-avatica/blob/89e0deb510311b85b8c8bacde6d2ff70c309930e/core/src/main/java/org/apache/calcite/avatica/remote/Service.java#L2668-L2678],
> though this isn't an actual response is does seem to expect a response type
> signature.
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