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    • Sprint:
      10.2.4-5, 10.3.1-2

      Description

      Add support for instant add column for InnoDB when adding a new column with a default value last.

      We have got patches from Alibaba and TenCent for doing this. We should choose either one or merge them.

      The idea in both patches is to add a new row type to InnoDB where the number of columns
      are stored in each row in 1-2 bytes. When creating a row we store the current number of columns. This allows us to fill any extra columns with default values on read.

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              • Assignee:
                marko Marko Mäkelä
                Reporter:
                monty Michael Widenius
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