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  1. MariaDB Server
  2. MDEV-35398

Improve shrinking of system tablespace

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    Description

      During shrinking of system tablespace, we should free the rollback
      segment header exists in system tablespace if there are any separate
      undo tablespace exists. This should be done during slow shutdown.

      Reset the TRX_RSEG_N_SLOTS in first rollback segment page. This can
      be done in fil_space_t::garbage_collect()

      1) Come up with mtr test case to make sure that shrinking
      gets block by undo segment header page of first rollback
      segment

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          relates to

          Task - A task that needs to be done. MDEV-14795 InnoDB system tablespace cannot be shrunk

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

          Bug - A problem which impairs or prevents the functions of the product. MDEV-34529 Shrink the system tablespace when system tablespace contains MDEV-30671 leaked undo pages

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

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              thiru Thirunarayanan Balathandayuthapani
              thiru Thirunarayanan Balathandayuthapani
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                Updated:

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