From: Amit Langote <amitlangot...@gmail.com> Sent: Thursday, May 27, 2021 1:54 PM > On Thu, May 27, 2021 at 11:47 AM houzj.f...@fujitsu.com > <houzj.f...@fujitsu.com> wrote: > > About teaching relcache about caching the target partition. > > > > David-san suggested cache the partidx in PartitionDesc. > > And it will need looping and checking the cached value at each level. > > I was thinking can we cache a partidx list[1, 2 ,3], and then we can > > follow the list to get the last partition and do the partition CHECK > > only for the last partition. If any unexpected thing happen, we can > > return to the original table and redo the tuple routing without using the > cached index. > > What do you think ? > > Where are you thinking to cache the partidx list? Inside PartitionDesc or > some > executor struct?
I was thinking cache the partidx list in PartitionDescData which is in relcache, if possible, we can use the cached partition between statements. Best regards, houzj
