Uploaded image for project: 'MariaDB Server'
  1. MariaDB Server
  2. MDEV-33469

Server incorrectly describes known variables as UNKNOWN if invalid values are specified at startup

    XMLWordPrintable

Details

    Description

      MariaDB gives a misleading error message if you specify an invalid value for a known system variable on the command line.

      Take innodb-log-file-size as an example variable:

      Known variable, legal value:

      $ sql/mariadbd ... --innodb-log-file-size=1000000
      ...
      2024-02-15 13:05:18 0 [Note] sql/mariadbd: ready for connections.

      Known variable, invalid values:

      $ sql/mariadbd ... --innodb-log-file-size=-123                             # <- Not legal because negative
      ...
      2024-02-15 13:06:25 0 [ERROR] sql/mariadbd: unknown variable 'innodb-log-file-size=-123'

      $ sql/mariadbd ... --innodb-log-file-size=999999999999999999999999999      # <- Not legal because it's too large
      ...
      2024-02-15 13:06:59 0 [ERROR] sql/mariadbd: unknown variable 'innodb-log-file-size=999999999999999999999999999'

      Solution

      Instead of reporting this as an "unknown variable", it should be reported as an "invalid value."
      The code that produces this misleading error message is at https://github.com/MariaDB/server/blob/e71aecfd308d6093fd693044253518a872994394/mysys/my_getopt.c#L389

      Attachments

        Issue Links

          Activity

            People

              TheLinuxJedi Andrew Hutchings
              dlenski Daniel Lenski (Inactive)
              Votes:
              0 Vote for this issue
              Watchers:
              5 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

                Git Integration

                  Error rendering 'com.xiplink.jira.git.jira_git_plugin:git-issue-webpanel'. Please contact your Jira administrators.