Simon Riggs writes:
> Avoid marking buffer dirty when VACUUM has no work to do.
> When wal_level = 'hot_standby' we touched the last page of the
> relation during a VACUUM, even if nothing else had happened.
> That would alter the LSN of the last block and set the mtime
> of the relation file unne
Avoid marking buffer dirty when VACUUM has no work to do.
When wal_level = 'hot_standby' we touched the last page of the
relation during a VACUUM, even if nothing else had happened.
That would alter the LSN of the last block and set the mtime
of the relation file unnecessarily. Noted by Thom Brown.
