From: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
To: Julien Rouhaud <rjuju123@gmail.com>
To: Tomas Vondra <tomas.vondra@2ndquadrant.com>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Cc: Kevin Grittner <kgrittn@gmail.com>
Cc: Michael Paquier <michael@paquier.xyz>
Subject: Re: Add parallelism and glibc dependent only options to reindexdb
Date: Fri, 5 Jul 2019 18:22:19 +0200
Message-ID: <2b1504ac-3d6c-11ec-e1ce-3daf132b3d37@2ndquadrant.com> (raw)
In-Reply-To: <CAOBaU_ZuVqBr1BLrEDLRt1Bp_aF_F9ShM+uy=ePLWm9L9cnDYw@mail.gmail.com>
References: <CAOBaU_YrnH_Jqo46NhaJ7uRBiWWEcS40VNRQxgFbqYo9kApUsg@mail.gmail.com>
<20190702082804.e7qgfncsyvxpcgra@development>
<CAOBaU_ZuVqBr1BLrEDLRt1Bp_aF_F9ShM+uy=ePLWm9L9cnDYw@mail.gmail.com>
On 2019-07-02 10:45, Julien Rouhaud wrote:
> It just seemed wrong to me to allow a partial processing for something
> that's aimed to prevent corruption. I'd think that if users are
> knowledgeable enough to only reindex a subset of indexes/tables in
> such cases, they can also discard indexes that don't get affected by a
> collation lib upgrade. I'm not strongly opposed to supporting if
> though, as there indeed can be valid use cases.
We are moving in this direction. Thomas Munro has proposed an approach
for tracking collation versions on a per-object level rather than
per-database. So then we'd need a way to reindex not those indexes
affected by collation but only those affected by collation and not yet
fixed.
One could also imagine a behavior where not-yet-fixed indexes are simply
ignored by the planner. So the gradual upgrading approach that Tomas
described is absolutely a possibility.
--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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To: pgsql-hackers@postgresql.org
Cc: peter.eisentraut@2ndquadrant.com, rjuju123@gmail.com, tomas.vondra@2ndquadrant.com, pgsql-hackers@lists.postgresql.org, kgrittn@gmail.com, michael@paquier.xyz
Subject: Re: Add parallelism and glibc dependent only options to reindexdb
In-Reply-To: <2b1504ac-3d6c-11ec-e1ce-3daf132b3d37@2ndquadrant.com>
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