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From Chunwei Lei <chunwei.l...@gmail.com>
Subject Re: [DISCUSSION] Extension of Metadata Query
Date Wed, 23 Oct 2019 03:40:00 GMT
I agree with Danny. We should believe that uses can handle it well.

Best,
Chunwei


On Tue, Oct 22, 2019 at 3:26 PM Danny Chan <yuzhao.cyz@gmail.com> wrote:

> >  I don’t trust the typical Calcite user to be able to write a sub-class
> that works correctly and efficiently.
>
> People who sub-class RelMetadataQuery are almost those who has deep
> customization of the calcite-core, for example, the MaxCompute or the
> Apache Flink.
>
> We may assume that it is not that easy to implement a perfect extension
> of RelMetadataQuery, but let’s open this chance to them, give them the
> freedom to extension, we should have the confidence.
>
> Best,
> Danny Chan
> 在 2019年10月22日 +0800 AM9:58,dev@calcite.apache.org,写道:
> >
> > I don’t trust the typical Calcite user to be able to write a sub-class
> that works correctly and efficiently.
>

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