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  1. MariaDB Server
  2. MDEV-14246

Skip the ha_innobase::prepare_inplace_alter_table() phase if no inplace_alter_table() phase is needed

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      Description

      In the ALGORITHM=INPLACE API, if the operation involves data changes, such as adding an index or rebuilding the table, it will be necessary to invoke a "prepare" phase followed by a data transformation phase.

      Currently, the "prepare" phase is unnecessarily being executed for instant ADD COLUMN (MDEV-11369) and possibly other operations. This causes an unnecessary step to acquire and downgrade an exclusive meta-data lock, before upgrading the lock to exclusive again for executing ha_innobase::commit_inplace_alter_table().

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          duplicates

          Task - A task that needs to be done. MDEV-13134 Introduce ALTER TABLE attributes ALGORITHM=NOCOPY and ALGORITHM=INSTANT

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

          Task - A task that needs to be done. MDEV-11369 Instant add column for InnoDB

          • Major - Major loss of function.
          • Closed

          Task - A task that needs to be done. MDEV-13134 Introduce ALTER TABLE attributes ALGORITHM=NOCOPY and ALGORITHM=INSTANT

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-14016 Allow instant ADD COLUMN, ADD INDEX, LOCK=NONE

          • Major - Major loss of function.
          • Closed

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              Assignee:
              thiru Thirunarayanan Balathandayuthapani
              Reporter:
              marko Marko Mäkelä
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                Resolved:

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