c84243d5b4
reindexdb batches the REINDEX commands of all indexes attached to the
same table into a single multi-statement query when using multiple jobs,
as two steps with query "gen" and "run".
Such a query fails with REINDEX CONCURRENTLY, as this command cannot run
inside a transaction block. Batching cannot be avoided because the
indexes of one table have to be re-indexed one at a time to avoid
conflicts across jobs.
Let's error out cleanly on the reindexdb side if this combination of
options is used, instead of having the server complain about that. This
case has not been considered by 47f99a407d.
If there is interest in supporting this combination of options, the code
should be redesigned for this purpose with some better batching, rather
than try to use sets of "gen" and "run" routines. As currently written,
an index-level reindexdb uses a set of "gen" steps with one final "run"
step, which is nice code-wise. (Note: I doubt that that this would be
worth the effort.)
Author: Kirill Reshke <reshkekirill@gmail.com>
Discussion: https://postgr.es/m/CALdSSPiEkAmS+n7Ea9XDMrLjkbQk=CrB7zw1kcq9B47hfKUhXw@mail.gmail.com
Backpatch-through: 17
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
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General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/19/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/19/installation.html.
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