From: Fujii Masao <masao.fujii@oss.nttdata.com>
To: pgsql-docs@lists.postgresql.org
Subject: Re: The description for pg_replication_slots.restart_lsn
Date: Thu, 25 Jun 2020 09:42:47 +0900
Message-ID: <d6517043-606c-a953-bc66-bca101c5a604@oss.nttdata.com> (raw)
In-Reply-To: <6497f1e9-3148-c5da-7e49-b2fddad9a42f@oss.nttdata.com>
References: <6497f1e9-3148-c5da-7e49-b2fddad9a42f@oss.nttdata.com>
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
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To: pgsql-docs@postgresql.org
Cc: masao.fujii@oss.nttdata.com, pgsql-docs@lists.postgresql.org
Subject: Re: The description for pg_replication_slots.restart_lsn
In-Reply-To: <d6517043-606c-a953-bc66-bca101c5a604@oss.nttdata.com>
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