Uploaded image for project: 'MariaDB Server'
  1. MariaDB Server
  2. MDEV-35876

speedup collation/charset lookup

    XMLWordPrintable

Details

    Description

      currently a collation lookup (collation name to collation id) is done (in get_collation_number_internal()) by linearly scanning the array of collations.

      This used to work fine, but the number of collations is constantly growing (MDEV-27009, MDEV-20912) and the linear search is starting to become noticeable.

      It would be a good idea to change it to a hash lookup.

      Same can be done for character sets, even though the number of charsets didn't grow that much.

      Attachments

        Issue Links

          is caused by

          Task - A task that needs to be done. MDEV-20912 Add support for utf8mb4_0900_* collations in MariaDB Server

          • Major - Major loss of function.
          • Closed

          Task - A task that needs to be done. MDEV-27009 Add UCA-14.0.0 collations

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

          Activity

            People

              bar Alexander Barkov
              serg Sergei Golubchik
              Votes:
              0 Vote for this issue
              Watchers:
              6 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

                Time Tracking

                  Estimated:
                  Original Estimate - Not Specified
                  Not Specified
                  Remaining:
                  Remaining Estimate - 0d
                  0d
                  Logged:
                  Time Spent - 1d 5h 20m
                  1d 5h 20m

                  Git Integration

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