On 2018-May-10, Amit Langote wrote:
> How about we error out even *before* calling DefineIndex for the 1st time?
> I see that ProcessUtilitySlow() gets a list of all partitions when
> locking them for index creation before calling DefineIndex. Maybe, just
> go through the list and error out if one of them is a partition that we
> don't support creating an index on?
The overwhelming consensus seems to be for this option, so I pushed your
patch after some small tweaks -- mostly to simplify unnecessarily
baroque code. (I must have been thinking that recursion would happen
right in ProcessUtilitySlow. That doesn't match my memories, but I
can't explain this code otherwise.) I added a very small test too.
I think it'd be better to take this out of ProcessUtility also and into
DefineInde, for cleanliness sake; maybe add a 'recursing' flag to
DefineIndex. Not for pg11, though.
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services