• unknown's avatar
    BUG#5390 - problems with merge tables · 23549493
    unknown authored
    Additional fix for INSERT DELAYED with subselect.
    Originally detected in 5.1, but 5.0 could also be affected.
    The user thread creates a dummy table object,
    which is not included in the lock. The 'real' table is
    opened and locked by the 'delayed' system thread.
    The dummy object is now marked as not locked and this is
    tested in mysql_lock_have_duplicate().
    
    
    sql/lock.cc:
      BUG#5390 - problems with merge tables
      Additional fix for INSERT DELAYED with subselect.
      The user thread creates a dummy table object,
      which is not included in the lock.
      Changed to safer asserts.
    sql/sql_insert.cc:
      BUG#5390 - problems with merge tables
      Marked the dummy table object as not being
      included in the lock.
    23549493
lock.cc 36.8 KB