RE: Synchronizing slots from primary to standby

On Monday, March 4, 2024 5:52 PM Amit Kapila <amit.kapila16@gmail.com> wrote:
> 
> On Mon, Mar 4, 2024 at 9:35 AM Peter Smith <smithpb2250@gmail.com>
> wrote:
> >
> > OK, if the code will remain as-is wouldn't it be better to anyway
> > change the function name to indicate what it really does?
> >
> > e.g.  NeedToWaitForWal --> NeedToWaitForWalFlushOrStandbys
> >
> 
> This seems too long. I would prefer the current name NeedToWaitForWal as
> waiting for WAL means waiting to flush the WAL and waiting to replicate it to
> standby. On similar lines, the variable name standby_slot_oldest_flush_lsn looks
> too long. How about ss_oldest_flush_lsn (where ss indicates standy_slots)?
> 
> Apart from this, I have made minor modifications in the attached.

Thanks, I have merged it.

Attach the V105 patch set which addressed Peter, Amit and Bertrand's comments.

This version also includes the following changes:
* We found a string matching issue for query_until() and fixed it.
* Removed one un-used parameter from NeedToWaitForStandbys.
* Disable the sub before testing the pg_logical_slot_get_changes in 040.pl, this is to prevent
This test from catching the warning from another walsender.
* Ran pgindent.

Best Regards,
Hou zj