On regressions:
MDEV-36765: JSON Histogram cannot handle >1 byte characters #4080
"Starting from 10.11.12, Incorrect handling of UTF-8 characters (and
other character sets requiring more than a single byte representation)
in the minimum/maximum positions of a table during the execution of
ANALYZE TABLE tbl PERSISTENT FOR ALL resulted in an endless loop
consuming more memory and prevented the server from terminating."
(my fault for making JSON types utf8mb4 in JSON_UNQUOTE, so please have my apologies)
MDEV-36871 mariadb-backup incremental segfault querying mariadb_backup_history #4112
"Mariabackup since
MDEV-30000
(10.11.12, 11.4.6, 11.8.2) has a regression when using
--incremental-history-name which incorrectly handled the forcing of the
innodb checkpoint causing Mariabackup to crash. Also discovered that in
the mysql.mariadb_backup_history the format column when
--stream=mbstream was used was recorded as "tar". This has been
corrected to "mbstream". Under Windows the full path of mariabackup.exe
was used as in the "tool" column of the history table and this is now
only recording the executable name without the path. Resilience against
user specified --incremental-history-name or --incremental-history-uuid
which exceeds the field size also produces an error rather than behaving
erroneously."
So this is impacting those that use incremental backups and history tables.
fixed by:
Few others are listed
There's a few Galera ones worth looking at, and one XA bug.