On Tue, Jul 26, 2022 at 4:53 AM James Pang (chaolpan) <chaol...@cisco.com> wrote:
> Hi , > > We have PG v13.6 in RHEL8.4, we try to set table unlogged before load > data. There are a lot of existing data in this table, when ‘alter table > xxx set unlogged’, we found it take long time and spend time on IO > datafileread. Is it expected? > > > Yes, the whole table needs to be written to WAL so this could take a long time for a large table
