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288eeb3a31
Introduce a new storage engine API method commit_checkpoint_request(). This is used to replace the fsync() at the end of every storage engine commit with a single fsync() when a binlog is rotated. Binlog rotation is now done during group commit instead of being delayed until unlog(), removing some server stall and avoiding an expensive lock/unlock of LOCK_log inside unlog().
32 lines
1.3 KiB
Plaintext
32 lines
1.3 KiB
Plaintext
SET GLOBAL max_binlog_size= 4096;
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SET GLOBAL innodb_flush_log_at_trx_commit= 1;
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RESET MASTER;
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CREATE TABLE t1 (a INT PRIMARY KEY, b MEDIUMTEXT) ENGINE=Innodb;
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SET DEBUG_SYNC= "binlog_open_before_update_index SIGNAL con1_ready WAIT_FOR con1_cont";
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SET SESSION debug_dbug="+d,crash_create_critical_before_update_index";
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INSERT INTO t1 VALUES (1, REPEAT("x", 4100));
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SET DEBUG_SYNC= "now WAIT_FOR con1_ready";
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SET DEBUG_SYNC= "ha_commit_trans_after_prepare SIGNAL con2_ready";
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INSERT INTO t1 VALUES (2, NULL);
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SET DEBUG_SYNC= "now WAIT_FOR con2_ready";
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SET DEBUG_SYNC= "now SIGNAL con1_cont";
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Got one of the listed errors
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SELECT a FROM t1 ORDER BY a;
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a
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1
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show binary logs;
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Log_name File_size
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master-bin.000001 #
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master-bin.000002 #
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show binlog events in 'master-bin.000001' from <binlog_start>;
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Log_name Pos Event_type Server_id End_log_pos Info
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master-bin.000001 # Format_desc # # SERVER_VERSION, BINLOG_VERSION
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master-bin.000001 # Binlog_checkpoint # # master-bin.000001
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master-bin.000001 # Query # # use `test`; CREATE TABLE t1 (a INT PRIMARY KEY, b MEDIUMTEXT) ENGINE=Innodb
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master-bin.000001 # Query # # BEGIN
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master-bin.000001 # Table_map # # table_id: # (test.t1)
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master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
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master-bin.000001 # Xid # # COMMIT /* XID */
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master-bin.000001 # Rotate # # master-bin.000002;pos=<binlog_start>
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DROP TABLE t1;
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