| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> |
| Cc: | Noah Misch <noah(at)leadboat(dot)com>, Joe Conway <mail(at)joeconway(dot)com>, Peter Eisentraut <peter(at)eisentraut(dot)org>, Alexander Korotkov <aekorotkov(at)gmail(dot)com>, "Guo, Adam" <adamguo(at)amazon(dot)com>, "pgsql-hackers(at)lists(dot)postgresql(dot)org" <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Nathan Bossart <nathandbossart(at)gmail(dot)com>, Jim Mlodgenski <jimmy76(at)gmail(dot)com> |
| Subject: | Re: pg_trgm comparison bug on cross-architecture replication due to different char implementation |
| Date: | 2024-09-10 18:57:55 |
| Message-ID: | 3542370.1725994675@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> writes:
> An alternative way would be that we store the char signedness in the
> control file, and gin_trgm_ops opclass reads it if the bytes in the
> meta page shows 'unset'. The char signedness in the control file
> doesn't mean to be used for the compatibility check for physical
> replication but used as a hint. But it also could be a bit messy,
> though.
Yeah, that seems like it could work. But are we sure that replicas
get a copy of the primary's control file rather than creating their
own?
regards, tom lane
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