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Code Activity

BUG#47678 Changes to n-tables that happen early in a trans. are only flushed upon commit

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Let
    - T be a transactional table and N non-transactional table.
    - B be begin, C commit and R rollback.
    - N be a statement that accesses and changes only N-tables.
    - T be a statement that accesses and changes only T-tables.

In RBR, changes to N-tables that happen early in a transaction are not immediately flushed
upon committing a statement. This behavior may, however, break consistency in the presence
of concurrency since changes done to N-tables become immediately visible to other
connections. To fix this problem, we do the following:

  . B N N T C would log - B N C B N C B T C.
  . B N N T R would log - B N C B N C B T R.

Note that we are not preserving history from the master as we are introducing a commit that
never happened. However, this seems to be more acceptable than the possibility of breaking
consistency in the presence of concurrency.
This commit is contained in:
Alfranio Correia
2009-10-06 01:54:00 +01:00
parent 678eb3d66f
commit b31e0c9a48
6 changed files with 469 additions and 10 deletions
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22
mysql-test/suite/binlog/r/binlog_row_mix_innodb_myisam.result
View File

@@ -133,6 +133,10 @@ master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t1)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Xid # # COMMIT /* XID */
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t2)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Query # # COMMIT
insert into t1 values(11);
commit;
show binlog events from <binlog_start>;
@@ -144,6 +148,8 @@ master-bin.000001 # Xid # # COMMIT /* XID */
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t2)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Query # # COMMIT
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t1)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Xid # # COMMIT /* XID */
@@ -272,6 +278,10 @@ master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t1)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Xid # # COMMIT /* XID */
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t2)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Query # # COMMIT
master-bin.000001 # Query # # use `test`; drop table t1,t2
master-bin.000001 # Query # # use `test`; create table t0 (n int)
master-bin.000001 # Query # # BEGIN
@@ -372,7 +382,7 @@ master-bin.000001 # Query # # use `test`; DROP TABLE if exists t2
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t1)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Query # # ROLLBACK
master-bin.000001 # Query # # COMMIT
master-bin.000001 # Query # # use `test`; DROP TABLE IF EXISTS t2
master-bin.000001 # Query # # use `test`; CREATE TABLE t2 (a int, b int, primary key (a)) engine=innodb
master-bin.000001 # Query # # BEGIN
@@ -390,9 +400,7 @@ master-bin.000001 # Query # # use `test`; DROP TABLE t2
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t1)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Table_map # # table_id: # (test.t1)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Query # # ROLLBACK
master-bin.000001 # Query # # COMMIT
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t1)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
@@ -400,7 +408,11 @@ master-bin.000001 # Query # # COMMIT
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t1)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Query # # ROLLBACK
master-bin.000001 # Query # # COMMIT
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t1)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Query # # COMMIT
master-bin.000001 # Query # # use `test`; TRUNCATE table t2
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t1)