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  1. MariaDB Server
  2. MDEV-19514

Defer change buffer merge until pages are requested

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      Description

      For MDEV-14481, we must defer the change buffer merge to the moment when the secondary index leaf page is requested by a user thread.

      This would also simplify MDEV-16526, because the change buffer I/O would not have to be treated as a special case.

      The change buffer format will not be changed as part of this task. That could remain part of MDEV-11634.

      As part of this, the counter innodb_ibuf_merge_usec will be removed from information_schema.innodb_metrics.

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        1. MDEV-19514.ods
          57 kB
        2. MDEV-19514-2.ods
          74 kB
        3. MDEV-19514-3.ods
          63 kB

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              • Assignee:
                marko Marko Mäkelä
                Reporter:
                marko Marko Mäkelä
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