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  1. MariaDB Server
  2. MDEV-17081

Make optimizer aware of Mdev-371 (long unique index)

Details

    • Task
    • Status: Stalled (View Workflow)
    • Major
    • Resolution: Unresolved
    • None
    • Optimizer, Server
    • None

    Description

      This mdev is about leveraging long unique index for blob in optimizer.

      Currently there are 2 approaches

      1. fix ha_index_read_max(idx_map) to look for hash(blob column ) instead of actual blob.

      2. Extend the where condition with DB_ROW_HASH_XX = hash(where long columns)

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          blocks

          Task - A task that needs to be done. MDEV-17662 Default to UTF8

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

          Bug - A problem which impairs or prevents the functions of the product. MDEV-19705 Assertion `tmp >= 0' failed in best_access_path

          • Major - Major loss of function.
          • Closed

          Activity

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            sachin.setiya.007 Sachin Setiya (Inactive) created issue -
            sachin.setiya.007 Sachin Setiya (Inactive) made changes -
            Field Original Value New Value
            Description In the case of long unique use blob hash for key_ref This mdev is about leveraging long unique index for blob in optimizer.

            Currently there are 2 approaches

            1. fix ha_index_read_max(idx_map) to look for hash(blob column ) instead of actual blob.

            2. Extend the where condition with DB_ROW_HASH_XX = hash(where long columns)
            julien.fritsch Julien Fritsch made changes -
            Status Open [ 1 ] In Progress [ 3 ]
            serg Sergei Golubchik made changes -
            serg Sergei Golubchik made changes -
            Fix Version/s 10.4 [ 22408 ]
            serg Sergei Golubchik made changes -
            Issue Type Bug [ 1 ] Task [ 3 ]
            serg Sergei Golubchik made changes -
            sachin.setiya.007 Sachin Setiya (Inactive) made changes -
            Status In Progress [ 3 ] Stalled [ 10000 ]
            serg Sergei Golubchik made changes -
            Workflow MariaDB v3 [ 89122 ] MariaDB v4 [ 131699 ]
            Elkin Andrei Elkin made changes -
            Assignee Sachin Setiya [ sachin.setiya.007 ] Sergei Golubchik [ serg ]

            People

              serg Sergei Golubchik
              sachin.setiya.007 Sachin Setiya (Inactive)
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              Dates

                Created:
                Updated:

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