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https://issues.apache.org/jira/browse/IGNITE-16395?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aleksey Plekhanov updated IGNITE-16395:
---------------------------------------
    Labels: calcite2-required calcite3-required  (was: )

> Calcite engine. Implement correct copy-on-write on schema objects change
> ------------------------------------------------------------------------
>
>                 Key: IGNITE-16395
>                 URL: https://issues.apache.org/jira/browse/IGNITE-16395
>             Project: Ignite
>          Issue Type: Improvement
>            Reporter: Aleksey Plekhanov
>            Priority: Major
>              Labels: calcite2-required, calcite3-required
>
> Currently, we only copy the schemas list when any schema object changes (see 
> {{{}SchemaHolderImpl.rebuild(){}}}), but it can lead to some problems. For 
> example, during planning, if some index dropped concurrently there will be 
> NPE after {{tbl.getIndex(String)}} in some rules. So, we should copy the 
> table containing this index and copy the schema containing this table at 
> least for DROP INDEX command.



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