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https://issues.apache.org/jira/browse/CALCITE-4568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17478613#comment-17478613
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Botong Huang commented on CALCITE-4568:
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[~Leo Zhou] yes, it will probably take some time to digest and review
considering the amount of code here.
[~julianhyde] please let us know if there's anything we can help. The first
commit CALCITE-4737 is in already, thanks!
> Tempura: extending Calcite into an incremental query optimizer
> --------------------------------------------------------------
>
> Key: CALCITE-4568
> URL: https://issues.apache.org/jira/browse/CALCITE-4568
> Project: Calcite
> Issue Type: New Feature
> Reporter: Botong Huang
> Priority: Major
>
> As discussed in the email thread, this is an attempt to extend the Calcite
> optimizer into a general incremental query optimizer, based on our research
> paper published in VLDB 2021:
> Tempura: a general cost-based optimizer framework for incremental data
> processing
> To our best knowledge, this is the first general cost-based incremental
> optimizer that can find the best plan across multiple families of incremental
> computing methods, including IVM, Streaming, DBToaster, etc. Experiments (in
> the paper) shows that the generated best plan is consistently much better
> than the plans from each individual method alone.
> In general, incremental query planning is central to database view
> maintenance and stream processing systems, and are being adopted in active
> databases, resumable query execution, approximate query processing, etc. We
> are hoping that this feature can help widening the spectrum of Calcite,
> solicit more use cases and adoption of Calcite.
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