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https://issues.apache.org/jira/browse/CALCITE-911?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Julian Hyde resolved CALCITE-911.
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Resolution: Fixed
Fixed in http://git-wip-us.apache.org/repos/asf/calcite/commit/ac8d04ed. Thanks
for the PR, [~jni]!
> Add a variant of CalciteSchema that does not cache sub-objects
> --------------------------------------------------------------
>
> Key: CALCITE-911
> URL: https://issues.apache.org/jira/browse/CALCITE-911
> Project: Calcite
> Issue Type: Bug
> Reporter: Jinfeng Ni
> Assignee: Jinfeng Ni
> Fix For: 1.5.0
>
>
> CalciteSchema by default uses cache to store table, sub-schema, function.
> This would work perfectly for schema-based system, yet would create problem
> for Drill, which dynamically explore the schema on the fly during query
> execution.
> One solution is to refactor CalciteSchema and make it as an interface. The
> default implementation would still use the current implementation. Further,
> it would other system to extend the default behavior and make CalciteSchema
> works for Drill as well.
> Background information: The issue around CalciteSchema is one of the reasons
> that Drill has to use a forked version of Calcite. Hopefully, if we could
> resolve this issue, we are one step further to remove the forked Calcite in
> the near future.
>
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