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SET GLOBAL innodb_flush_log_at_trx_commit= 1;
RESET MASTER;
CREATE TABLE t1 (a INT PRIMARY KEY, b MEDIUMTEXT) ENGINE=Innodb;
*** Test that FLUSH LOGS waits if a transaction ordered commit is in progress.
connect con1,localhost,root,,;
SET DEBUG_SYNC= "commit_before_get_LOCK_commit_ordered SIGNAL con1_ready WAIT_FOR con1_go";
INSERT INTO t1 VALUES (1, REPEAT("x", 1));
connection default;
SET DEBUG_SYNC= "now WAIT_FOR con1_ready";
SET DEBUG_SYNC= "rotate_after_rotate SIGNAL con_flush_ready WAIT_FOR default_go";
FLUSH LOGS;
connect con2,localhost,root,,;
Trx_1 is not yet committed:
SELECT count(*) as 'ZERO' from t1;
ZERO
0
Wait for Trx_2 has rotated binlog:
SET DEBUG_SYNC= "now WAIT_FOR con_flush_ready";
SET DEBUG_SYNC= "now SIGNAL default_go";
# restart
connection default;
Must be tree logs in the list:
show binary logs;
Log_name File_size
master-bin.000001 #
master-bin.000002 #
master-bin.000003 #
include/show_binlog_events.inc
Log_name Pos Event_type Server_id End_log_pos Info
master-bin.000001 # Format_desc # # SERVER_VERSION, BINLOG_VERSION
master-bin.000001 # Gtid_list # # []
master-bin.000001 # Binlog_checkpoint # # master-bin.000001
master-bin.000001 # Gtid # # GTID #-#-#
master-bin.000001 # Query # # use `test`; CREATE TABLE t1 (a INT PRIMARY KEY, b MEDIUMTEXT) ENGINE=Innodb
master-bin.000001 # Gtid # # BEGIN GTID #-#-#
master-bin.000001 # Annotate_rows # # INSERT INTO t1 VALUES (1, REPEAT("x", 1))
master-bin.000001 # Table_map # # table_id: # (test.t1)
master-bin.000001 # Write_rows_v1 # # table_id: # flags: STMT_END_F
master-bin.000001 # Xid # # COMMIT /* XID */
master-bin.000001 # Rotate # # master-bin.000002;pos=POS
Only one Binlog checkpoint must exist and point to master-bin.000001
include/show_binlog_events.inc
Log_name Pos Event_type Server_id End_log_pos Info
master-bin.000002 # Format_desc # # SERVER_VERSION, BINLOG_VERSION
master-bin.000002 # Gtid_list # # [#-#-#]
master-bin.000002 # Binlog_checkpoint # # master-bin.000001
SELECT count(*) as 'ONE' from t1;
ONE
1
connection default;
DROP TABLE t1;
SET debug_sync = 'reset';
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