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  1. MariaDB Server
  2. MDEV-22367

Remove write support for ROW_FORMAT=COMPRESSED

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    Description

      Between 2004 and 2007, when I designed and implemented ROW_FORMAT=COMPRESSED in the InnoDB Plugin for MySQL 5.1 based on Heikki Tuuri’s rough idea, it might have been a good idea to trade some CPU cycles for I/O bandwidth. Nowadays, with fast solid-state storage being a commodity, it is less so. ROW_FORMAT=COMPRESSED is introducing quite a bit of complexity to the buffer pool and crash recovery. We could make the server much faster if we removed write support.

      The format is also too rigid to support innodb_page_size larger than 16 KiB or things like instant ADD COLUMN (MDEV-11369) or per-record transaction identifiers (MDEV-17598).

      To allow users to upgrade from old databases, we must retain read support at least for a few major versions.

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          relates to

          Task - A task that needs to be done. MDEV-23497 make ROW_FORMAT=COMPRESSED read-only by default

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-27058 Buffer page descriptors are too large

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-12152 KEY_BLOCK_SIZE strangeness in ALTER TABLE

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Open

          New Feature - A new feature of the product, which has yet to be developed. MDEV-17598 InnoDB index option for per-record transaction ID

          • Major - Major loss of function.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. MDEV-21727 Optimize redo logging for ROW_FORMAT=COMPRESSED

          • Major - Major loss of function.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. MDEV-23835 InnoDB: Failing assertion: bpage->buf_fix_count == 0 in buf_relocate

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-24797 Column Compression - ERROR 1265 (01000): Data truncated for column

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-26400 ALTER TABLE does not remove KEY_BLOCK_SIZE for non-Compressed InnoDB tables

          • Major - Major loss of function.
          • Stalled

          Bug - A problem which impairs or prevents the functions of the product. MDEV-30563 Failure 1478: Table storage engine 'InnoDB' does not support the create option 'ROW_TYPE' upon OPTIMIZE TABLE after Recovery

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

          Web Link DBA Stack Exchange with a few comments on compression acheived

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              marko Marko Mäkelä
              marko Marko Mäkelä
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                Resolved:

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