Re: Confused about stream replication protocol documentation

On Dec 23, 2020, at 8:11 PM, Fujii Masao <masao.fujii@oss.nttdata.com> wrote:

On 2020/12/23 11:08, Li Japin wrote:

On Dec 22, 2020, at 11:13 PM, Fujii Masao <masao.fujii@oss.nttdata.com <mailto:masao.fujii@oss.nttdata.com>> wrote:

‘B’ means a backend and ‘F’ means a frontend. Maybe as [1] does, we should
add the note like "Each is marked to indicate that it can be sent by
a frontend (F) and a backend (B)" into the description about each message
format for START_REPLICATION.

[1]
https://www.postgresql.org/docs/devel/protocol-message-formats.html <https://www.postgresql.org/docs/devel/protocol-message-formats.html>

Thanks for your clarify.  Maybe we should move the "protocol message formats”
before “stream replication protocol” or referenced it in "stream replication protocol”.

I like the latter. And maybe it's better to reference to also
"53.6. Message Data Types" there because the messages for
START_REPLICATION use the message data types.