[pgpool-hackers: 4003] Re: [pgpool-general: 7587] Version 2 protocol

[Tatsuo Ishii]

In the yesterday's off mailing list discussion, all pgpool developers
agreed that we will drop version 2 protocol support for upcoming
Pgpool-II 4.3.

Today I noticed that the dropping v2 protocol in PostgreSQL is for
master and REL_14_STABLE branches *only*. This means that all other
stable branches (13, 12, 11, 10 and 9.6) continue to support the v2
protocol.

Since pgpool supports multiple versions of PostgreSQL, I now start to
suspect that we should not drop v2 protocol support until v13 and
older versions of PostgreSQL are deprecated.

I would like to hear opinions from other Pgpool-II developers.
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese:http://www.sraoss.co.jp

From: Tatsuo Ishii <ishii at sraoss.co.jp>
Subject: [pgpool-general: 7587] Version 2 protocol
Date: Sat, 29 May 2021 21:03:04 +0900 (JST)
Message-ID: <20210529.210304.269661055957597937.t-ishii at sraoss.co.jp>

> Now that upcoming PostgreSQL 14 decides to stop supporting version 2
> frontend/backend protocol, I wonder if Pgpool-II should drop support
> for the protocol as well. Is there any user who is still using the
> protocol?
> 
> 	Remove server and libpq support for the version 2 wire
> 	protocol (Heikki Linnakangas)
> 
> 	This was last used as the default in Postgres 7.2 (year 2002).
> 	
> Best regards,
> --
> Tatsuo Ishii
> SRA OSS, Inc. Japan
> English: http://www.sraoss.co.jp/index_en.php
> Japanese:http://www.sraoss.co.jp
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