Re: basebackup: add missing deflateEnd() in gzip compression sink

On Sat, Mar 21, 2026 at 02:22:25PM -0700, Jianghua Yang wrote:
> v1-0001: basebackup: add missing deflateEnd() calls in gzip compression
> sink

After double-checking the whole code, I agree that this is a good
practice to have in the tree. However, the issue is not worth
bothering in back-branches as the server-side base backup gzip code
relies on allocation and free callbacks, with zlib internals doing
nothing with fds or more persistent states as far as I have read its
code. For the current use, we'd bloat this data once per tablespace
in a single base backup, safe even if the connection is persistent
(missed that in my first message).

What I am more worried about are future callers of this code, though,
and we care about having a end() call for each matching init[2]() call
in the tree in all the places that rely on gzip internals. So that's
a good practice on consistency ground, at least. For these reasons,
applied that on HEAD.

> v1-0002: pg_basebackup: add missing close() for incremental manifest
> file

This one does not matter. This resource is for a backup manifest and
we are talking about a single one for a single invocation of the
binary.
--
Michael