Commit e469cedf authored by unknown's avatar unknown
Browse files

Merge kpettersson@bk-internal:/home/bk/mysql-5.1-maint

into  naruto.:C:/cpp/mysql-5.1-maint

parents 54886b08 b5b7840b
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+0 −28
Original line number Diff line number Diff line
@@ -6,31 +6,3 @@ use prn;
ERROR 42000: Unknown database 'prn'
create table nu (a int);
drop table nu;
CREATE TABLE `t1` (
`TIM` datetime NOT NULL,
`VAL` double default NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
CREATE TABLE `t2` (
`TIM` datetime NOT NULL,
`VAL` double default NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
CREATE TABLE `mt` (
`TIM` datetime NOT NULL,
`VAL` double default NULL
) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 INSERT_METHOD=LAST
UNION=(`t1`,`t2`);
INSERT INTO mt VALUES ('2006-01-01',0);
ALTER TABLE `t2` RENAME TO `t`;
INSERT INTO mt VALUES ('2006-01-01',0);
ERROR HY000: Can't lock file (errno: 155)
select * from mt;
ERROR HY000: Can't lock file (errno: 155)
FLUSH TABLES;
select * from mt;
ERROR HY000: Can't find file: 'mt' (errno: 2)
ALTER TABLE `t` RENAME TO `t2`;
INSERT INTO mt VALUES ('2006-01-01',0);
select * from mt;
TIM	VAL
2006-01-01 00:00:00	0
2006-01-01 00:00:00	0
+0 −39
Original line number Diff line number Diff line
@@ -18,42 +18,3 @@ create table nu (a int);
drop table nu;

# End of 4.1 tests

#
# Bug #20789: Merge Subtable Rename Causes Crash
#
CREATE TABLE `t1` (
  `TIM` datetime NOT NULL,
  `VAL` double default NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
CREATE TABLE `t2` (
  `TIM` datetime NOT NULL,
  `VAL` double default NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
CREATE TABLE `mt` (
  `TIM` datetime NOT NULL,
  `VAL` double default NULL
) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 INSERT_METHOD=LAST
UNION=(`t1`,`t2`);

# insert into the merge table and thus open it.
INSERT INTO mt VALUES ('2006-01-01',0);

# Alter one of the tables that are part of the merge table
ALTER TABLE `t2` RENAME TO `t`;

# Insert into the merge table that has just been altered
--error 1015
INSERT INTO mt VALUES ('2006-01-01',0); 
--error 1015
select * from mt;

FLUSH TABLES;
--error 1017
select * from mt;

# Alter one of the tables that are part of the merge table
ALTER TABLE `t` RENAME TO `t2`;
INSERT INTO mt VALUES ('2006-01-01',0);
select * from mt; 
+10 −6
Original line number Diff line number Diff line
@@ -241,12 +241,16 @@ int mi_lock_database(MI_INFO *info, int lock_type)
  else
  {
    /*
      The file has been closed and kfile is -1.
      See mi_extra.c about implementation of
      HA_EXTRA_PREPARE_FOR_DELETE.
       Check for bad file descriptors if this table is part
       of a merge union. Failing to capture this may cause
       a crash on windows if the table is renamed and 
       later on referenced by the merge table.
     */
    if( info->owned_by_merge && (info->s)->kfile < 0 )
    {
      error = HA_ERR_NO_SUCH_TABLE;
    }
  }
#endif
  pthread_mutex_unlock(&share->intern_lock);
#if defined(FULL_LOG) || defined(_lint)
+3 −0
Original line number Diff line number Diff line
@@ -291,6 +291,9 @@ struct st_myisam_info {
  my_bool page_changed;		/* If info->buff can't be used for rnext */
  my_bool buff_used;		/* If info->buff has to be reread for rnext */
  my_bool once_flags;           /* For MYISAMMRG */
#ifdef __WIN__
  my_bool owned_by_merge;                       /* This MyISAM table is part of a merge union */
#endif
#ifdef THREAD
  THR_LOCK_DATA lock;
#endif
+12 −1
Original line number Diff line number Diff line
@@ -27,7 +27,18 @@ int myrg_lock_database(MYRG_INFO *info, int lock_type)

  error=0;
  for (file=info->open_tables ; file != info->end_table ; file++) 
  {
#ifdef __WIN__
    /*
      Make sure this table is marked as owned by a merge table.
      The semaphore is never released as long as table remains
      in memory. This should be refactored into a more generic
      approach (observer pattern)
     */
    (file->table)->owned_by_merge = TRUE;
#endif
    if ((new_error=mi_lock_database(file->table,lock_type)))
      error=new_error;
  }
  return(error);
}