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  1. MariaDB Server
  2. MDEV-24851

Semi-synchronous replication behaviour on statement or transaction

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    • Task
    • Status: Open (View Workflow)
    • Major
    • Resolution: Unresolved
    • None
    • Replication
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    Description

      Feature Request:

      One of our customers was asking if MariaDB semi-synchronous replication can do semi-synchronous replication on demand on per statement or per transaction level as MongoDB can do.

      I was not aware of such a functionality and studied docu but I did not find any hint about this feature.

      https://mariadb.com/kb/en/mariadb-replication-overview-for-sql-server-users/

      Also the variables cannot be changed on a per session base but only globally.

      So I checked MongoDB docu and there is indeed such a functionality:

      https://docs.mongodb.com/manual/reference/write-concern/
      https://docs.mongodb.com/manual/core/transactions/#transactions-write-concern
      https://docs.mongodb.com/manual/core/replica-set-write-concern/

      Feature request: Implement similar functionality like write concern in MariaDB (semi-synchronous) Replication.

      Use case: In huge countries with shaky network connections this seems to be a need.

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            Elkin Andrei Elkin
            oli Oli Sennhauser
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