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https://issues.apache.org/jira/browse/CALCITE-520?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17225596#comment-17225596
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Pavol Vidlička commented on CALCITE-520:
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Hi! I'd like to take a stab at this.
>From what I managed to grok, it requires to:
- add a `cancelStatement` method to the `Meta` interface and implement it for
`JdbcMeta` and `RemoteMeta`
- implement a "CancelStatement" request (for JSON and protobuf)
Is there anything else I missed?
> Support cancel in remote JDBC driver
> ------------------------------------
>
> Key: CALCITE-520
> URL: https://issues.apache.org/jira/browse/CALCITE-520
> Project: Calcite
> Issue Type: Bug
> Components: avatica
> Reporter: Julian Hyde
> Priority: Major
>
> Remote JDBC driver should support canceling running statements.
> I believe we have the ingredients already. The client knows the statement id
> of a statement before it executes it. And when cancel is received in the
> client JDBC driver, it can send a (new) CancelStatement request on a separate
> RPC call. The server can then set the cancel flag, and from that point, the
> mechanism is the same as local cancel.
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