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  1. MariaDB Server
  2. MDEV-8765

mysqldump silently corrupts 4-byte UTF-8 data

Details

    Description

      Bug for Oracle MySQL: https://bugs.mysql.com/bug.php?id=71746

      But this also affect MariaDB 10.0:

      [dvaneeden@dve-mac msb_ma10_0_20]$ ./my sqldump --skip-extended-insert unicodedata | grep DOLPHIN
      		 
      INSERT INTO `ucd` VALUES ('1F42C','?','DOLPHIN','So','0','ON','','','','','N','','','','','');
      		 
      [dvaneeden@dve-mac msb_ma10_0_20]$ ./my sqldump --skip-extended-insert --default-character-set=utf8mb4 unicodedata | grep DOLPHIN
      		 
      INSERT INTO `ucd` VALUES ('1F42C','��','DOLPHIN','So','0','ON','','','','','N','','','','','');

      Attachments

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-7128 Configuring charsets or collations as utf8 yields surprising result and leads to data loss

          • Major - Major loss of function.
          • Closed

          Task - A task that needs to be done. MDEV-8334 Rename utf8 to utf8mb3

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

          Web Link Bug #71746 - mysqldump may use utf8mb4 as default-character-set

          Activity

            Ascending order - Click to sort in descending order
            dveeden Daniël van Eeden created issue -
            dveeden Daniël van Eeden made changes -
            Field Original Value New Value
            elenst Elena Stepanova made changes -
            Fix Version/s 10.0 [ 16000 ]
            Assignee Alexander Barkov [ bar ]
            Labels upstream
            elenst Elena Stepanova made changes -
            danblack Daniel Black made changes -
            Labels upstream upstream-fixed
            danblack Daniel Black made changes -
            Labels upstream-fixed beginner-friendly upstream-fixed
            svoj Sergey Vojtovich made changes -
            Labels beginner-friendly upstream-fixed beginner-friendly contribution foundation upstream-fixed
            svoj Sergey Vojtovich made changes -
            Priority Major [ 3 ] Critical [ 2 ]
            bar Alexander Barkov made changes -
            issue.field.resolutiondate 2018-10-12 07:51:28.0 2018-10-12 07:51:28.09
            bar Alexander Barkov made changes -
            Fix Version/s 10.3.11 [ 23141 ]
            Fix Version/s 10.0 [ 16000 ]
            Resolution Fixed [ 1 ]
            Status Open [ 1 ] Closed [ 6 ]
            bar Alexander Barkov made changes -
            Fix Version/s 10.4.0 [ 23115 ]
            bar Alexander Barkov made changes -
            bar Alexander Barkov made changes -
            bar Alexander Barkov made changes -
            serg Sergei Golubchik made changes -
            Workflow MariaDB v3 [ 71405 ] MariaDB v4 [ 149587 ]

            People

              bar Alexander Barkov
              dveeden Daniël van Eeden
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              Dates

                Created:
                Updated:
                Resolved:

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