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  1. MariaDB Server
  2. MDEV-17965

Allow instant VARCHAR increase of indexed fields

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    Description

      Index data is not changed in ALGORITHM=INSTANT so it's safe to perform such operation on indexes field.

      Similar case is in MDEV-15564 where charset can be changed for indexes field from f.ex utf8mb3 to utf8mb4. And this issue is primary needed for MDEV-15564 to solve a problem on SQL level.

      Every storage engine which supports INPLACE ALTER can benefit from it. But right now only InnoDB supports IS_EQUAL_PACK_LENGTH so this change is for InnoDB.

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          Task - A task that needs to be done. MDEV-15564 Avoid table rebuild in ALTER TABLE on collation or charset changes

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed
          duplicates

          Bug - A problem which impairs or prevents the functions of the product. MDEV-16849 Extending indexed VARCHAR column should be instantaneous

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

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              marko Marko Mäkelä
              kevg Eugene Kosov (Inactive)
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                Resolved:

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