Commit 6aa44060a3 removed pg_authid's TOAST table because the only varlena column is rolpassword, which cannot be de-TOASTed during authentication because we haven't selected a database yet and cannot read pg_class. Since that change, attempts to set password hashes that require out-of-line storage will fail with a "row is too big" error. This error message might be confusing to users. This commit places a limit on the length of password hashes so that attempts to set long password hashes will fail with a more user-friendly error. The chosen limit of 512 bytes should be sufficient to avoid "row is too big" errors independent of BLCKSZ, but it should also be lenient enough for all reasonable use-cases (or at least all the use-cases we could imagine). Reviewed-by: Tom Lane, Jonathan Katz, Michael Paquier, Jacob Champion Discussion: https://postgr.es/m/89e8649c-eb74-db25-7945-6d6b23992394%40gmail.com
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.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.