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  1. MariaDB Server
  2. MDEV-36523

Optimizer Trace replay step #3: load basic statistics back

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Details

    • Goes into testing as part of MDEV-38701
    • Q1/2026 Server Development, Q2/2026 Server Development

    Description

      Continuation of MDEV-36511.
      Assuming the user has extracted the JSON section from MDEV-36511 and has provided its contents in a variable, create code to parse it back.

      Then, use the hooks to replace the statistics fed into the optimizer.

      Note: one can use a storage engine (i.e. an object derived from class handler) to capture or fake the statistics, but is this a good approach? Inheriting from class handler (or, e.g. ha_innobase) seems to be quite complex.

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          is part of

          New Feature - A new feature of the product, which has yet to be developed. MDEV-27189 Optimizer Trace: save all info needed for replay

          • Major - Major loss of function.
          • Closed
          relates to

          Task - A task that needs to be done. MDEV-38701 Optimizer Trace Replay: Q1 2026 Dev Sprint Work 1

          • Major - Major loss of function.
          • In Testing
          split to

          Task - A task that needs to be done. MDEV-38700 Optimizer Trace: Q1 2026 Dev fixes

          • Major - Major loss of function.
          • Closed

          Task - A task that needs to be done. MDEV-38701 Optimizer Trace Replay: Q1 2026 Dev Sprint Work 1

          • Major - Major loss of function.
          • In Testing

          Task - A task that needs to be done. MDEV-38781 Optimizer Trace Replay: Q1 2026 Dev Sprint Work 3

          • Major - Major loss of function.
          • Closed

          Task - A task that needs to be done. MDEV-38805 Optimizer Trace Replay: Q1 2026 Dev Sprint Work 2

          • Major - Major loss of function.
          • Closed

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              bsrikanth Srikanth Bondalapati
              psergei Sergei Petrunia
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                Resolved:

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