• unknown's avatar
    Fixed bug #36055: mysql_upgrade doesn't really 'upgrade' tables · e7e49eb6
    unknown authored
    The REPAIR TABLE ... USE_FRM query silently corrupts data of tables
    with old .FRM file version.
    The mysql_upgrade client program or the REPAIR TABLE query (without
    the USE_FRM clause) can't prevent this trouble, because in the
    common case they don't upgrade .FRM file to compatible structure.
    
    1. Evaluation of the REPAIR TABLE ... USE_FRM query has been
       modified to reject such tables with the message:
       "Failed repairing incompatible .FRM file".
    
    2. REPAIR TABLE query (without USE_FRM clause) evaluation has been
       modified to upgrade .FRM files to current version.
    
    3. CHECK TABLE ... FOR UPGRADE query evaluation has been modified
       to return error status when .FRM file has incompatible version.
    
    4. mysql_upgrade and mysqlcheck client programs call CHECK TABLE
       FOR UPGRADE and REPAIR TABLE queries, so their behaviors have
       been changed too to upgrade .FRM files with incompatible
       version numbers.
    
    
    mysql-test/std_data/bug36055.MYD:
      Added test data for bug #36055.
    mysql-test/std_data/bug36055.MYI:
      Added test data for bug #36055.
    mysql-test/std_data/bug36055.frm:
      Added test data for bug #36055.
    mysql-test/r/repair.result:
      Added test case for bug# 36055.
    mysql-test/t/repair.test:
      Added test case for bug# 36055.
    sql/handler.cc:
      Fixed bug #36055: mysql_upgrade doesn't really 'upgrade' tables
      
      The handler::ha_check_for_upgrade method has been modified to
      return error if .FRM file has incompatible version number.
    sql/sql_table.cc:
      Fixed bug #36055: mysql_upgrade doesn't really 'upgrade' tables
      
      The prepare_for_repair function has been modified to reject
      REPAIR TABLE ... USE_FRM queries on incompatible .FRM files
      with the message: "Failed repairing incompatible .FRM file".
    e7e49eb6