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Added innodb_locks_unsafe_for_binlog option. This option turns off Innodb

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next-key locking. Using this option the locks InnoDB sets on index 
  records do not affect the ``gap'' before that index record. Thus, this option
  allows phantom problem.


innobase/include/srv0srv.h:
  Added srv_locks_unsafe_for_binlog for innodb_locks_unsafe_for_binlog option.
innobase/row/row0sel.c:
  If innodb_locks_unsafe_for_binlog option is used, we lock only the record, i.e. 
  next-key locking is not used. Therefore, setting lock to the index record
  do not affect the ``gap'' before that index record. Thus, this option
  allows phantom problem, because concurrent insert operations are allowed inside 
  the select range.
innobase/srv/srv0srv.c:
  Added srv_locks_unsafe_for_binlog for innodb_locks_unsafe_for_binlog option.
sql/ha_innodb.cc:
  Added innobase_locks_unsafe_for_binlog and srv_locks_unsafe_for_binlog for 
  innodb_locks_unsafe_for_binlog option.
sql/ha_innodb.h:
  Added innobase_locks_unsafe_for_binlog for innodb_locks_unsafe_for_binlog option.
sql/mysqld.cc:
  Added OPT_INNODB_LOCKS_UNSAFE_FOR_BINLOG, innobase_locks_unsafe_for_binlog for
  innodb_locks_unsafe_for_binlog option.
sql/set_var.cc:
  Added innodb_locks_unsafe_for_binlog and innobase_locks_unsafe_for_binlog for
  innodb_locks_unsafe_for_binlog option.
BitKeeper/etc/logging_ok:
  Logging to logging@openlogging.org accepted
This commit is contained in:
unknown
2004-07-20 14:15:38 +03:00
parent 784191d9ce
commit 238b226f26
8 changed files with 91 additions and 8 deletions
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4
innobase/srv/srv0srv.c
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@ -74,6 +74,10 @@ ibool srv_file_per_table = FALSE; /* store to its own file each table
created by an user; data dictionary
tables are in the system tablespace
0 */
ibool srv_locks_unsafe_for_binlog = FALSE; /* Place locks to records only
i.e. do not use next-key locking
except on duplicate key checking and
foreign key checking */
ulint srv_n_data_files = 0;
char** srv_data_file_names = NULL;
ulint* srv_data_file_sizes = NULL; /* size in database pages */