reindexdb: Forbid index-level REINDEX with CONCURRENTLY and multiple jobs 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 <[email protected]> Discussion: https://postgr.es/m/CALdSSPiEkAmS+n7Ea9XDMrLjkbQk=crb7zw1kcq9b47hfku...@mail.gmail.com Backpatch-through: 17 Branch ------ REL_19_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/c84243d5b484b0a672664fcfaeeac22204887423 Modified Files -------------- src/bin/scripts/reindexdb.c | 3 +++ src/bin/scripts/t/090_reindexdb.pl | 10 ++++++++++ 2 files changed, 13 insertions(+)
