On Thu, Dec 8, 2022 at 2:43 PM Antonin Houska <ah@cybertec.at> wrote:
> When checking something else in the base backup code, I've noticed that
> sendFileWithContent() does not advance the 'content' pointer. The sink buffer
> is large enough (32kB) so that the first iteration usually processes the whole
> file (only special files are processed by this function), and thus that the
> problem is hidden.
>
> However it's possible to hit the issue: if there are too many tablespaces,
> pg_basebackup generates corrupted tablespace_map. Instead of writing all the
> tablespace paths it writes only some and then starts to write the contents
> from the beginning again.
Thanks for the report, analysis, and fix. I have committed your patch
and back-patched to v15.
--
Robert Haas
EDB: http://www.enterprisedb.com