Re: [HACKERS] Add support for tuple routing to foreign partitions

Hi,

Amit Langote wrote:

> 2. If I understand the description you provided in [1] correctly, the
> point of having ri_PartitionIsValid and ExecInitExtraPartitionInfo() is to
> avoid possibly-redundantly performing following two steps in
> ExecSetupPartitionTupleRouting() for *reused* partition ResultRelInfos
> that may not be used for tuple routing after all:
> 
>  - create the parent_child_tupconv_maps[] entry for it
>  - perform FDW tuple routing initialization.
> 
> If that's true, the following comment could be expanded just a little bit
> to make that clearer:
> 
> /*
>  * ExecInitPartitionExtraInfo
>  *      Do the remaining initialization work for the given partition

Yeah, I think the comments on why this is a separate step should be more
extensive.  Probably add something to ExecInitPartitionInfo too.

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
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