On 2020/06/17 23:47, Fujii Masao wrote:
> Hi,
>
> The document explains that restart_lsn column in pg_replication_slots view is:
>
> The address (LSN) of oldest WAL which still might be required by
> the consumer of this slot and thus won't be automatically removed
> during checkpoints.
>
> But the latter part is not true in v13 thanks to max_slot_wal_keep_size.
> I think that we need to update it as follows. Thought?
>
> The address (LSN) of oldest WAL which still might be required by
> the consumer of this slot and thus won't be automatically removed
> during checkpoints unless this LSN gets behind more than
> max_slot_wal_keep_size from the current LSN.
>
> Patch attached.
Barring any objection, I will commit this patch.
Regards,
--
Fujii Masao
Advanced Computing Technology Center
Research and Development Headquarters
NTT DATA CORPORATION