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0697ee265f
Keep track of how many pending XIDs (transactions that are prepared in storage engine and written into binlog, but not yet durably committed on disk in the engine) there are in each binlog. When the count of one binlog drops to zero, write a new binlog checkpoint event, telling which is the oldest binlog with pending XIDs. When doing XA recovery after a crash, check the last binlog checkpoint event, and scan all binlog files from that point onwards for XIDs that must be committed if found in prepared state inside engine. Remove the code in binlog rotation that waits for all prepared XIDs to be committed before writing a new binlog file (this is no longer necessary when recovery can scan multiple binlog files).
126 lines
3.1 KiB
Plaintext
126 lines
3.1 KiB
Plaintext
CREATE TABLE t1(a CHAR(255),
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b CHAR(255),
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c CHAR(255),
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d CHAR(255),
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id INT,
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PRIMARY KEY(id)) ENGINE=InnoDB;
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create table t2 like t1;
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create procedure setcrash(IN i INT)
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begin
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CASE i
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WHEN 1 THEN SET SESSION debug_dbug="d,crash_commit_after_prepare";
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WHEN 2 THEN SET SESSION debug_dbug="d,crash_commit_after_log";
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WHEN 3 THEN SET SESSION debug_dbug="d,crash_commit_before_unlog";
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WHEN 4 THEN SET SESSION debug_dbug="d,crash_commit_after";
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WHEN 5 THEN SET SESSION debug_dbug="d,crash_commit_before";
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ELSE BEGIN END;
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END CASE;
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end //
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FLUSH TABLES;
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INSERT INTO t2(a, b, c, d, id) VALUES ('a', 'b', 'c', 'd', 9+1);
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INSERT INTO t2(a, b, c, d, id) VALUES ('a', 'b', 'c', 'd', 8+1);
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INSERT INTO t2(a, b, c, d, id) VALUES ('a', 'b', 'c', 'd', 7+1);
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INSERT INTO t2(a, b, c, d, id) VALUES ('a', 'b', 'c', 'd', 6+1);
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INSERT INTO t2(a, b, c, d, id) VALUES ('a', 'b', 'c', 'd', 5+1);
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INSERT INTO t2(a, b, c, d, id) VALUES ('a', 'b', 'c', 'd', 4+1);
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INSERT INTO t2(a, b, c, d, id) VALUES ('a', 'b', 'c', 'd', 3+1);
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INSERT INTO t2(a, b, c, d, id) VALUES ('a', 'b', 'c', 'd', 2+1);
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INSERT INTO t2(a, b, c, d, id) VALUES ('a', 'b', 'c', 'd', 1+1);
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INSERT INTO t2(a, b, c, d, id) VALUES ('a', 'b', 'c', 'd', 0+1);
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SET binlog_format= mixed;
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RESET MASTER;
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START TRANSACTION;
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insert into t1 select * from t2;
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call setcrash(5);
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COMMIT;
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Got one of the listed errors
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SELECT * FROM t1 ORDER BY id;
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a b c d id
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SHOW BINLOG EVENTS LIMIT 3,1;
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Log_name Pos Event_type Server_id End_log_pos Info
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delete from t1;
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SET binlog_format= mixed;
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RESET MASTER;
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START TRANSACTION;
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insert into t1 select * from t2;
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call setcrash(4);
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COMMIT;
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Got one of the listed errors
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SELECT * FROM t1 ORDER BY id;
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a b c d id
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a b c d 1
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a b c d 2
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a b c d 3
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a b c d 4
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a b c d 5
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a b c d 6
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a b c d 7
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a b c d 8
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a b c d 9
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a b c d 10
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SHOW BINLOG EVENTS LIMIT 3,1;
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Log_name Pos Event_type Server_id End_log_pos Info
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master-bin.000001 # Query 1 # use `test`; insert into t1 select * from t2
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delete from t1;
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SET binlog_format= mixed;
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RESET MASTER;
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START TRANSACTION;
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insert into t1 select * from t2;
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call setcrash(3);
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COMMIT;
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Got one of the listed errors
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SELECT * FROM t1 ORDER BY id;
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a b c d id
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a b c d 1
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a b c d 2
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a b c d 3
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a b c d 4
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a b c d 5
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a b c d 6
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a b c d 7
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a b c d 8
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a b c d 9
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a b c d 10
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SHOW BINLOG EVENTS LIMIT 3,1;
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Log_name Pos Event_type Server_id End_log_pos Info
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master-bin.000001 # Query 1 # use `test`; insert into t1 select * from t2
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delete from t1;
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SET binlog_format= mixed;
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RESET MASTER;
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START TRANSACTION;
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insert into t1 select * from t2;
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call setcrash(2);
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COMMIT;
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Got one of the listed errors
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SELECT * FROM t1 ORDER BY id;
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a b c d id
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a b c d 1
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a b c d 2
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a b c d 3
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a b c d 4
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a b c d 5
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a b c d 6
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a b c d 7
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a b c d 8
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a b c d 9
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a b c d 10
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SHOW BINLOG EVENTS LIMIT 3,1;
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Log_name Pos Event_type Server_id End_log_pos Info
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master-bin.000001 # Query 1 # use `test`; insert into t1 select * from t2
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delete from t1;
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SET binlog_format= mixed;
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RESET MASTER;
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START TRANSACTION;
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insert into t1 select * from t2;
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call setcrash(1);
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COMMIT;
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Got one of the listed errors
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SELECT * FROM t1 ORDER BY id;
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a b c d id
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SHOW BINLOG EVENTS LIMIT 3,1;
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Log_name Pos Event_type Server_id End_log_pos Info
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delete from t1;
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DROP TABLE t1;
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DROP TABLE t2;
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DROP PROCEDURE setcrash;
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