On 26/09/2019 09:54, Joao Junior wrote:
> Hi,
> Is this necessary to run analyze on a slave using streaming
> replication after promotion??
>
Yes, you should run ANALYZE on all of your tables in all of your
databases after a promotion. The data distribution statistics are
replicated, as Pavel mentioned, but other statistics are not. In
particular, pg_stat_all_tables.n_dead_tup is not replicated and so
autovacuum has no idea when it needs to run.