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  1. MariaDB Server
  2. MDEV-17484

New defaults for eq_range_index_dive_limit in 10.4

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      See https://lists.launchpad.net/maria-developers/msg11460.html :

      So, MDEV-16934 introduced eq_range_index_dives_limit into 10.2.8 and 10.3.0.

      The default was set to 0 (which means no limit) in order to not introduce
      optimizer behavior changes into stable versions.

      The question is: should 10.4 also have 0 by default or we can set it to some
      finite limit? MySQL's default value is 10.

      After the decision was: It should be set to 10. This is what this task is about.

      Saw MYSQL 8.0 , the default there is 200
      https://dev.mysql.com/doc/refman/8.0/en/server-system-variables.html#sysvar_eq_range_index_dive_limit
      psergey igor for your information

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              varun Varun Gupta (Inactive)
              psergei Sergei Petrunia
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