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  1. Percona Server
  2. PS-5446

FLUSH CHANGED_PAGE_BITMAPS leaves gaps between the last written bitmap LSN and InnoDB checkpoint LSN

    Details

    • Type: Bug
    • Status: Done
    • Priority: Medium
    • Resolution: Fixed
    • Affects Version/s: Not 5.6, Not 5.7, 8.0.13-4
    • Fix Version/s: 8.0.15-6
    • Component/s: None
    • Labels:

      Description

      It is related to the fact that checkpoint LSN is not necessary aligned to the log block size. Log tracker is reading in blocks aligned with the LOG_BLOCK_SIZE to avoid reading incomplete blocks. When log_online_follow_redo_log completes, it may leave the last redo log record in the parse buffer. Last tracked LSN will be roughly the last checkpoint LSN - last log record length.

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                • Assignee:
                  sergei.glushchenko Sergei Glushchenko
                  Reporter:
                  sergei.glushchenko Sergei Glushchenko
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                    Updated:
                    Resolved:

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                    Time Spent - 1 day, 25 minutes
                    1d 25m