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  1. MariaDB Server
  2. MDEV-39108

events.events_stress errors "Unknown database"

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    Description

      This looks like DROP DATABASE isn't disabling the events in the database as its executing.

      cross reference for this test: cr:

      test failures of the form:

                            events.events_stress                     w31 [ fail ]  Found warnings/errors in server log file!
              Test ended at 2026-02-24 09:20:24
      line
      2026-02-24  9:20:24 1167 [ERROR] Event Scheduler: [root@localhost].[events_conn1_test4.conn1_round3_ev48] execution failed, failed to authenticate the user.
      2026-02-24  9:20:24 1167 [ERROR] Event Scheduler: [root@localhost][events_conn1_test4.conn1_round3_ev48] Unknown database 'events_conn1_test4'
      ^ Found warnings in /home/buildbot/amd64-msan-clang-20/build/mysql-test/var/31/log/mysqld.1.err
      ok
      

      Not exclusive to test4

      https://buildbot.mariadb.org/#/builders/1099/builds/3233

      2026-02-24 15:01:02 306 [ERROR] Event Scheduler: [root@localhost].[events_conn1_test2.conn1_round1_ev28] execution failed, failed to authenticate the user.
      2026-02-24 15:01:02 306 [ERROR] Event Scheduler: [root@localhost][events_conn1_test2.conn1_round1_ev28] Unknown database 'events_conn1_test2'
      ^
      

      Earlier failures of just an Unknown database where showing up much earlier with amd64-ubuntu-2004-bigtest.

      currently msan/ubasan-clang-20 builders affected. Notably amd64-ubuntu-2204-bigtest, the only other big test builder isn't hitting this (event.event_stress is big).

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              danblack Daniel Black
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