Improve doc on parallel stream changes for Stream Abort message

From: Anthonin Bonnefoy <anthonin(dot)bonnefoy(at)datadoghq(dot)com>
To: PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Improve doc on parallel stream changes for Stream Abort message
Date: 2025-06-23 08:40:36
Message-ID: CAO6_XqoKteQR1AnaR8iPcegbBE+HkAc2-g12rxN04yOt4-2ORg@mail.gmail.com
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Hi,

While adding parsing of logical replication to Wireshark[1], I've
found the Stream Abort description possibly misleading. Stream Abort
will have the Abort LSN and TS when parallel streaming is enabled.
However, the documentation only mentions "This field is available
since protocol version 4" which could be interpreted (at least, I've
interpreted it this way) as "this field will always present with
protocol version 4".

The attached patch adds a "(only present for parallel stream)" mention
to the Abort LSN and TS documentation, akin to what's done for
parallel transactions.

Regards,
Anthonin

[1]: https://gitlab.com/wireshark/wireshark/-/merge_requests/20268

Attachment Content-Type Size
v01-0001-Doc-improve-documentation-on-stream-abort.patch application/octet-stream 2.1 KB

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