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  1. MariaDB Server
  2. MDEV-22166

CONVERT PARTITION: move out partition into a table

Details

    Description

      Moving a table out from a partitioned table is new quite cumbersome:
      ('archive' is here a partitioned table and 'p1' is a normal table)

      CREATE TABLE tp1 LIKE archive;
      ALTER TABLE tp1 REMOVE PARTITIONING;
      ALTER TABLE archive EXCHANGE PARTITION p1 WITH TABLE tp1;
      ALTER TABLE archive DROP PARTITION p1;

      Instead one should be able to do:

      ALTER TABLE archive CONVERT PARTITION p1 TO TABLE tp1;

      The operation crash safety must be protected by DDL logging.

      Attachments

        Issue Links

          causes

          Bug - A problem which impairs or prevents the functions of the product. MDEV-26767 Server crashes when rename table and alter storage engine

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

          Task - A task that needs to be done. MDEV-17567 Atomic DDL

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

          Task - A task that needs to be done. MDEV-22162 Make partitions more flexible to use

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

          Task - A task that needs to be done. MDEV-17567 Atomic DDL

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

          Task - A task that needs to be done. MDEV-22165 CONVERT TABLE: move in partition from existing table

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

          Bug - A problem which impairs or prevents the functions of the product. MDEV-31013 CONVERT PARTITION is not documented in the KB

          • Major - Major loss of function.
          • Closed

          New Feature - A new feature of the product, which has yet to be developed. MDEV-22164 WITHOUT VALIDATION for EXCHANGE PARTITION/CONVERT IN

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

          New Feature - A new feature of the product, which has yet to be developed. MDEV-27180 Fully atomic partitioning DDL operations

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

          Bug - A problem which impairs or prevents the functions of the product. MDEV-31014 Database privileges are insufficient for CONVERT TABLE TO PARTITION

          • Major - Major loss of function.
          • Closed

          Activity

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            midenok Aleksey Midenkov added a comment -

            Should tp1 be locked under lock tables?

            LOCK TABLES t1 WRITE;
            ALTER TABLE t1 EXPORT PARTITION p1 AS TABLE tp1;
            SELECT * from tp1;
            Table 'tp1' was not locked with LOCK TABLES

            I think this is a good idea to lock tp1 as well otherwise there is no guarantee of data consistency between t1 and tp1.

            midenok Aleksey Midenkov added a comment - Should tp1 be locked under lock tables? LOCK TABLES t1 WRITE; ALTER TABLE t1 EXPORT PARTITION p1 AS TABLE tp1; SELECT * from tp1; Table 'tp1' was not locked with LOCK TABLES I think this is a good idea to lock tp1 as well otherwise there is no guarantee of data consistency between t1 and tp1.
            midenok Aleksey Midenkov added a comment -

            Please review

            bb-10.7-midenok-MDEV-22166

            midenok Aleksey Midenkov added a comment - Please review bb-10.7-midenok-MDEV-22166
            serg Sergei Golubchik added a comment -

            818407474d6 is mostly ok. a couple of minor comments.

            I presume logging changes are reviewed and ok'ed by Monty

            serg Sergei Golubchik added a comment - 818407474d6 is mostly ok. a couple of minor comments. I presume logging changes are reviewed and ok'ed by Monty

            People

              midenok Aleksey Midenkov
              monty Michael Widenius
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              Dates

                Created:
                Updated:
                Resolved:

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