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  1. MariaDB ColumnStore
  2. MCOL-4580

Extent's approximate range keeping for dictionaries

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Details

    • Task
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Fixed
    • None
    • 23.10
    • None
    • 2021-4, 2021-5, 2021-6, 2021-7, 2021-8, 2021-9, 2021-10, 2021-11, 2021-12, 2021-13, 2021-14, 2021-15, 2021-16, 2021-17, 2022-22, 2022-23, 2023-4, 2023-5, 2023-6, 2023-7, 2023-8, 2023-10, 2023-11, 2023-12, 2024-1

    Description

      Following the ideas from the design document, we may add extent range information for dictionaries.

      Token columns are, essentially, 8-byte-wide unsigned integers. They can be tracked just like other integer columns in extentmap. But instead of tracking values of tokens we will track values of prefixes of corresponding dictionary strings, with collation applied.

      I will add more precise plan to comments below.

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              sergey.zefirov Sergey Zefirov
              sergey.zefirov Sergey Zefirov
              Roman Roman
              Kirill Perov Kirill Perov
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                Updated:
                Resolved:

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