On Wed, Mar 2, 2022 at 7:15 PM Nitin Jadhav <nitinjadhavpostg...@gmail.com> wrote: > > > > > As mentioned upthread, there can be multiple backends that request a > > > > checkpoint, so unless we want to store an array of pid we should store > > > > a number > > > > of backend that are waiting for a new checkpoint. > > It's a good metric to show in the view but the information is not > readily available. Additional code is required to calculate the number > of requests. Is it worth doing that? I feel this can be added later if > required.
Is it that hard or costly to do? Just sending a message to increment the stat counter in RequestCheckpoint() would be enough. Also, unless I'm missing something it's still only showing the initial checkpoint flags, so it's *not* showing what the checkpoint is really doing, only what the checkpoint may be doing if nothing else happens. It just feels wrong. You could even use that ckpt_flags info to know that at least one backend has requested a new checkpoint, if you don't want to have a number of backends.
