release-21.1: add crdb_internal.validate_multi_region_zone_configs builtin #62931
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In addition to the release note, added some pgcodes to validation errors as well as minor refactoring to make it work and error nicely with the "overriding" error message. Also fix up some of the string escaping to use tree.Name. Release note (sql change): Add a new builtin `crdb_internal.validate_multi_region_zone_configs` which validates all zone configurations in the current database are correctly configured.
* Subzones may be defined in a different order. We did not take this into account which can cause bugs when e.g. ADD REGION adds a subzone in the end rather than in the old "expected" location in the subzones array. This has been fixed by comparing subzones using an unordered map. * The ApplyZoneConfig we previously did overwrote subzone fields on the original subzone array element, meaning that if there was a mismatch it would not be reported through validation. This is now fixed by applying the expected zone config to *zonepb.NewZoneConfig() instead. * Added logic to only check for zone config matches subzones from active subzone IDs. * Improve the error messaging when a subzone config is mismatching - namely, add index and partitioning information and differentiate between missing fields and missing / extraneous zone configs Release note (bug fix): Fixed validation bugs during ALTER TABLE ... SET LOCALITY / crdb_internal.validate_multi_region_zone_config where validation errors could occur when the database of a REGIONAL BY ROW table has a new region added. Also fix a validation bug partition zone mismatches configs were not caught.
otan
requested review from
ajstorm,
a team and
miretskiy
and removed request for
a team
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Backport:
Please see individual PRs for details.
/cc @cockroachdb/release