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  1. MariaDB Server
  2. MDEV-13563

lock DDL for mariabackup in 10.2+

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    • Task
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Fixed
    • 10.2.9
    • Backup
    • None

    Description

      In MySQL 5.7 (and MariaDB 10.2.2 onwards), the InnoDB redo log is not self-contained with respect to some DDL operations.
      Most notably, WL#7277 disables the redo logging of data pages in the initial phase of ALTER TABLEā€¦ALGORITHM=INPLACE. (The online_log apply is still being redo-logged.) The presence of a MLOG_INDEX_LOAD record indicates that some data was omitted from the redo log.

      Percona implements a workaround. We should look at their implementation.

      MDEV-13564 mentions another class of operations that makes the redo log not self-contained: TRUNCATE TABLE and undo tablespace truncation.

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              wlad Vladislav Vaintroub
              wlad Vladislav Vaintroub
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