On Thu, Nov 30, 2017 at 10:19 AM, Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>
wrote:
> ghiureai wrote:
> > can I run a checkpoint manually in master host than ?
>
> Yes, but that will only remove WAL files if there has
> been enough activity to cause one or more WAL switches.
>
> You just have to wait.
>
Note that you can shorten that waiting time by executing, as a superuser:
checkpoint;
select pg_switch_wal();