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  1. MariaDB Server
  2. MDEV-18115

Remove dummy tablespace for the redo log

Details

    Description

      In InnoDB, redo log file operations unnecessarily go through the fil_io() API. It would be cleaner to just have the log file descriptors straight inside log_sys.log.

      Most redo log writes are synchronous. The only exception is writing the checkpoint header block, which uses asynchronous I/O. It might be better to dedicate the io_handler_thread() for data file operations only, and not let them deal with the redo log checkpoint write completion.

      Attachments

        Issue Links

          blocks

          Task - A task that needs to be done. MDEV-14425 Change the InnoDB redo log format to reduce write amplification

          • Blocker - Blocks development and/or testing work, production could not run.
          • Closed

          Task - A task that needs to be done. MDEV-16526 Overhaul the InnoDB page flushing

          • Major - Major loss of function.
          • Closed

          Task - A task that needs to be done. MDEV-21382 use fdatasync() for redo log where appropriate

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

          Bug - A problem which impairs or prevents the functions of the product. MDEV-13542 Crashing on a corrupted page is unhelpful

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

          Bug - A problem which impairs or prevents the functions of the product. MDEV-31170 Document MDEV-18115, Remove dummy tablespace for the redo log

          • Major - Major loss of function.
          • Closed

          New Feature - A new feature of the product, which has yet to be developed. MDEV-26603 asynchronous redo log write

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

          Bug - A problem which impairs or prevents the functions of the product. MDEV-31124 Innodb_data_written miscounts doublewrites

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

          Activity

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            marko Marko Mäkelä created issue -
            marko Marko Mäkelä made changes -
            Field Original Value New Value
            Attachment remove_log_tablespace.patch [ 46909 ]
            kevg Eugene Kosov (Inactive) made changes -
            Status Open [ 1 ] In Progress [ 3 ]
            marko Marko Mäkelä made changes -
            marko Marko Mäkelä made changes -
            kevg Eugene Kosov (Inactive) made changes -
            Priority Major [ 3 ] Critical [ 2 ]
            serg Sergei Golubchik made changes -
            Fix Version/s 10.5 [ 23123 ]
            Fix Version/s 10.4 [ 22408 ]
            marko Marko Mäkelä made changes -
            kevg Eugene Kosov (Inactive) made changes -
            Assignee Eugene Kosov [ kevg ] Marko Mäkelä [ marko ]
            Status In Progress [ 3 ] In Review [ 10002 ]
            kevg Eugene Kosov (Inactive) made changes -
            marko Marko Mäkelä made changes -
            Assignee Marko Mäkelä [ marko ] Eugene Kosov [ kevg ]
            Status In Review [ 10002 ] Stalled [ 10000 ]
            kevg Eugene Kosov (Inactive) made changes -
            Fix Version/s 10.5.1 [ 24029 ]
            Fix Version/s 10.5 [ 23123 ]
            Resolution Fixed [ 1 ]
            Status Stalled [ 10000 ] Closed [ 6 ]
            serg Sergei Golubchik made changes -
            Workflow MariaDB v3 [ 91447 ] MariaDB v4 [ 133808 ]
            marko Marko Mäkelä made changes -
            marko Marko Mäkelä made changes -
            greenman Ian Gilfillan made changes -
            rob.schwyzer@mariadb.com Rob Schwyzer (Inactive) made changes -
            rob.schwyzer@mariadb.com Rob Schwyzer (Inactive) made changes -

            People

              kevg Eugene Kosov (Inactive)
              marko Marko Mäkelä
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              Dates

                Created:
                Updated:
                Resolved:

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