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MDEV-181: XID crash recovery across binlog boundaries

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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).
This commit is contained in:
unknown
2012-06-22 11:46:28 +02:00
parent 9fe317ffd6
commit 0697ee265f
53 changed files with 1174 additions and 221 deletions
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69
mysql-test/suite/innodb/r/binlog_consistent.result
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@ -3,11 +3,11 @@ RESET MASTER;
CREATE TABLE t1 (a INT, b VARCHAR(100), PRIMARY KEY (a,b)) ENGINE=innodb;
SHOW MASTER STATUS;
File Position Binlog_Do_DB Binlog_Ignore_DB
master-bin.000001 380
master-bin.000001 421
SHOW STATUS LIKE 'binlog_snapshot_%';
Variable_name Value
binlog_snapshot_file master-bin.000001
binlog_snapshot_position 380
binlog_snapshot_position 421
BEGIN;
INSERT INTO t1 VALUES (0, "");
# Connection con1
@ -38,10 +38,10 @@ a b
SHOW STATUS LIKE 'binlog_snapshot_%';
Variable_name Value
binlog_snapshot_file master-bin.000001
binlog_snapshot_position 904
binlog_snapshot_position 945
SHOW MASTER STATUS;
File Position Binlog_Do_DB Binlog_Ignore_DB
master-bin.000001 1316
master-bin.000001 1357
SELECT * FROM t2 ORDER BY a;
a
2
@ -60,44 +60,45 @@ a b
SHOW STATUS LIKE 'binlog_snapshot_%';
Variable_name Value
binlog_snapshot_file master-bin.000001
binlog_snapshot_position 904
binlog_snapshot_position 945
SHOW MASTER STATUS;
File Position Binlog_Do_DB Binlog_Ignore_DB
master-bin.000002 245
master-bin.000002 286
COMMIT;
SHOW STATUS LIKE 'binlog_snapshot_%';
Variable_name Value
binlog_snapshot_file master-bin.000002
binlog_snapshot_position 245
binlog_snapshot_position 286
SHOW MASTER STATUS;
File Position Binlog_Do_DB Binlog_Ignore_DB
master-bin.000002 245
master-bin.000002 286
SHOW BINLOG EVENTS;
Log_name Pos Event_type Server_id End_log_pos Info
master-bin.000001 4 Format_desc 1 245 Server ver: #, Binlog ver: #
master-bin.000001 245 Query 1 380 use `test`; CREATE TABLE t1 (a INT, b VARCHAR(100), PRIMARY KEY (a,b)) ENGINE=innodb
master-bin.000001 380 Query 1 492 use `test`; CREATE TABLE t2 (a INT PRIMARY KEY) ENGINE=myisam
master-bin.000001 492 Query 1 560 BEGIN
master-bin.000001 560 Query 1 648 use `test`; INSERT INTO t2 VALUES (2)
master-bin.000001 648 Query 1 717 COMMIT
master-bin.000001 717 Query 1 785 BEGIN
master-bin.000001 785 Query 1 877 use `test`; INSERT INTO t1 VALUES (0, "")
master-bin.000001 877 Xid 1 904 COMMIT /* XID */
master-bin.000001 904 Query 1 972 BEGIN
master-bin.000001 972 Query 1 1060 use `test`; INSERT INTO t2 VALUES (3)
master-bin.000001 1060 Query 1 1129 COMMIT
master-bin.000001 1129 Query 1 1197 BEGIN
master-bin.000001 1197 Query 1 1289 use `test`; INSERT INTO t1 VALUES (4, "")
master-bin.000001 1289 Xid 1 1316 COMMIT /* XID */
master-bin.000001 1316 Query 1 1384 BEGIN
master-bin.000001 1384 Query 1 1476 use `test`; INSERT INTO t1 VALUES (1, "")
master-bin.000001 1476 Xid 1 1503 COMMIT /* XID */
master-bin.000001 1503 Query 1 1571 BEGIN
master-bin.000001 1571 Query 1 1668 use `test`; INSERT INTO t1 VALUES (2, "first")
master-bin.000001 1668 Query 1 1766 use `test`; INSERT INTO t1 VALUES (2, "second")
master-bin.000001 1766 Xid 1 1793 COMMIT /* XID */
master-bin.000001 1793 Query 1 1861 BEGIN
master-bin.000001 1861 Query 1 1953 use `test`; INSERT INTO t1 VALUES (3, "")
master-bin.000001 1953 Xid 1 1980 COMMIT /* XID */
master-bin.000001 1980 Rotate 1 2024 master-bin.000002;pos=4
master-bin.000001 4 Format_desc 1 246 Server ver: #, Binlog ver: #
master-bin.000001 246 Binlog_checkpoint 1 286 master-bin.000001
master-bin.000001 286 Query 1 421 use `test`; CREATE TABLE t1 (a INT, b VARCHAR(100), PRIMARY KEY (a,b)) ENGINE=innodb
master-bin.000001 421 Query 1 533 use `test`; CREATE TABLE t2 (a INT PRIMARY KEY) ENGINE=myisam
master-bin.000001 533 Query 1 601 BEGIN
master-bin.000001 601 Query 1 689 use `test`; INSERT INTO t2 VALUES (2)
master-bin.000001 689 Query 1 758 COMMIT
master-bin.000001 758 Query 1 826 BEGIN
master-bin.000001 826 Query 1 918 use `test`; INSERT INTO t1 VALUES (0, "")
master-bin.000001 918 Xid 1 945 COMMIT /* XID */
master-bin.000001 945 Query 1 1013 BEGIN
master-bin.000001 1013 Query 1 1101 use `test`; INSERT INTO t2 VALUES (3)
master-bin.000001 1101 Query 1 1170 COMMIT
master-bin.000001 1170 Query 1 1238 BEGIN
master-bin.000001 1238 Query 1 1330 use `test`; INSERT INTO t1 VALUES (4, "")
master-bin.000001 1330 Xid 1 1357 COMMIT /* XID */
master-bin.000001 1357 Query 1 1425 BEGIN
master-bin.000001 1425 Query 1 1517 use `test`; INSERT INTO t1 VALUES (1, "")
master-bin.000001 1517 Xid 1 1544 COMMIT /* XID */
master-bin.000001 1544 Query 1 1612 BEGIN
master-bin.000001 1612 Query 1 1709 use `test`; INSERT INTO t1 VALUES (2, "first")
master-bin.000001 1709 Query 1 1807 use `test`; INSERT INTO t1 VALUES (2, "second")
master-bin.000001 1807 Xid 1 1834 COMMIT /* XID */
master-bin.000001 1834 Query 1 1902 BEGIN
master-bin.000001 1902 Query 1 1994 use `test`; INSERT INTO t1 VALUES (3, "")
master-bin.000001 1994 Xid 1 2021 COMMIT /* XID */
master-bin.000001 2021 Rotate 1 2065 master-bin.000002;pos=4
DROP TABLE t1,t2;