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|
--source include/have_debug_sync.inc
--source include/count_sessions.inc
# Scenario:
# C1 obtains implicit lock
# C2 notices the implicit lock and decides to do impl-to-expl conversion
# C1 starts commit and pauses after removing itself from rw-list, but before
# (old code) changing state to TRX_STATE_COMMITED_IN_MEMORY
# (new code) removing explicit locks
# C3 ignores C1 (as it is no longer in rw-list) and adds own exclusive lock on
# the record
# C2 finishes impl-to-explicit conversion
# (at this point we have two X locks on the same row)
CREATE TABLE t1(id INT PRIMARY KEY) ENGINE=InnoDB;
INSERT INTO t1 (id) VALUES (1),(3);
--connect(C1,localhost,root,,test)
--connect(C2,localhost,root,,test)
--connect(C3,localhost,root,,test)
--connection C1
BEGIN;
INSERT INTO t1 (id) VALUES (2);
--connection C2
BEGIN;
SET DEBUG_SYNC = "before_lock_rec_convert_impl_to_expl_for_trx
SIGNAL c2_decided
WAIT_FOR c2_can_convert";
SET DEBUG_SYNC = "lock_wait_will_wait SIGNAL c2_will_wait";
--send SELECT * FROM t1 WHERE id=2 FOR UPDATE
--connection C1
SET DEBUG_SYNC = "now WAIT_FOR c2_decided";
SET DEBUG_SYNC = "before_lock_trx_release_locks
SIGNAL c1_will_commit
WAIT_FOR c1_can_commit";
--send COMMIT
--connection C3
BEGIN;
SET DEBUG_SYNC = "now WAIT_FOR c1_will_commit";
SELECT * FROM t1 WHERE id=2 FOR UPDATE;
SET DEBUG_SYNC = "now SIGNAL c2_can_convert";
SET DEBUG_SYNC = "now WAIT_FOR c2_will_wait";
SET DEBUG_SYNC = "now SIGNAL c1_can_commit";
COMMIT;
--connection C1
--reap
--connection C2
--reap
COMMIT;
--connection default
--disconnect C1
--disconnect C2
--disconnect C3
DROP TABLE t1;
# Scenario:
# C1 obtains implicit lock
# C2 notices the implicit lock and decides to do impl-to-expl conversion
# C1 XA Prepares
# C1 starts commit and pauses after removing itself from rw-list, but before
# (old code) changing state to TRX_STATE_COMMITED_IN_MEMORY
# (new code) removing explicit locks
# C3 ignores C1 (as it is no longer in rw-list) and adds own exclusive lock on
# the record
# C2 finishes impl-to-explicit conversion
# (at this point we have two X locks on the same row)
CREATE TABLE t1(id INT PRIMARY KEY) ENGINE=InnoDB;
INSERT INTO t1 (id) VALUES (1),(3);
--connect(C1,localhost,root,,test)
--connect(C2,localhost,root,,test)
--connect(C3,localhost,root,,test)
--connection C1
XA START "xid0";
INSERT INTO t1 (id) VALUES (2);
--connection C2
BEGIN;
SET DEBUG_SYNC = "before_lock_rec_convert_impl_to_expl_for_trx
SIGNAL c2_decided
WAIT_FOR c2_can_convert";
SET DEBUG_SYNC = "lock_wait_will_wait SIGNAL c2_will_wait";
--send SELECT * FROM t1 WHERE id=2 FOR UPDATE
--connection C1
SET DEBUG_SYNC = "now WAIT_FOR c2_decided";
SET DEBUG_SYNC = "before_lock_trx_release_locks
SIGNAL c1_will_commit
WAIT_FOR c1_can_commit";
XA END "xid0";
XA PREPARE "xid0";
--send XA COMMIT "xid0"
--connection C3
BEGIN;
SET DEBUG_SYNC = "now WAIT_FOR c1_will_commit";
SELECT * FROM t1 WHERE id=2 FOR UPDATE;
SET DEBUG_SYNC = "now SIGNAL c2_can_convert";
SET DEBUG_SYNC = "now WAIT_FOR c2_will_wait";
SET DEBUG_SYNC = "now SIGNAL c1_can_commit";
COMMIT;
--connection C1
--reap
--connection C2
--reap
COMMIT;
--connection default
--disconnect C1
--disconnect C2
--disconnect C3
DROP TABLE t1;
# Scenario:
# C1 obtains implicit lock
# C2 notices the implicit lock and decides to do impl-to-expl conversion
# C1 starts commit and pauses after removing itself from rw-list, but before
# (old code) changing state to TRX_STATE_COMMITED_IN_MEMORY
# (new code) removing explicit locks
# C3 ignores C1 (as it is no longer in rw-list) and decides to add its own
# exclusive lock on the record
# C2 finishes impl-to-explicit conversion
# C3 proceeds to add its own lock
# C1 finishes commit
# C2 gets the lock granted and commits
# C3 gets the lock granted and commits
CREATE TABLE t1(id INT PRIMARY KEY) ENGINE=InnoDB;
INSERT INTO t1 (id) VALUES (1),(3);
--connect(C1,localhost,root,,test)
--connect(C2,localhost,root,,test)
--connect(C3,localhost,root,,test)
--connection C1
BEGIN;
INSERT INTO t1 (id) VALUES (2);
--connection C2
BEGIN;
SET DEBUG_SYNC = "before_lock_rec_convert_impl_to_expl_for_trx
SIGNAL c2_decided
WAIT_FOR c2_can_convert";
SET DEBUG_SYNC = "after_lock_rec_convert_impl_to_expl_for_trx
SIGNAL c2_done_conversion";
SET DEBUG_SYNC = "after_lock_clust_rec_read_check_and_lock
SIGNAL c2_done_locking";
--send SELECT * FROM t1 WHERE id=2 FOR UPDATE
--connection C1
SET DEBUG_SYNC = "now WAIT_FOR c2_decided";
SET DEBUG_SYNC = "before_lock_trx_release_locks
SIGNAL c1_will_commit
WAIT_FOR c1_can_commit";
--send COMMIT
--connection C3
BEGIN;
SET DEBUG_SYNC = "now WAIT_FOR c1_will_commit";
SET DEBUG_SYNC = "lock_wait_will_wait SIGNAL c3_will_wait";
SET DEBUG_SYNC = "after_lock_clust_rec_read_check_and_lock_impl_to_expl
SIGNAL c3_will_lock
WAIT_FOR c3_can_lock";
--send SELECT * FROM t1 WHERE id=2 FOR UPDATE
--connection default
SET DEBUG_SYNC = "now WAIT_FOR c3_will_lock";
SET DEBUG_SYNC = "now SIGNAL c2_can_convert";
SET DEBUG_SYNC = "now WAIT_FOR c2_done_conversion";
SET DEBUG_SYNC = "now WAIT_FOR c2_done_locking";
SET DEBUG_SYNC = "now SIGNAL c3_can_lock";
SET DEBUG_SYNC = "now WAIT_FOR c3_will_wait";
SET DEBUG_SYNC = "now SIGNAL c1_can_commit";
COMMIT;
--connection C1
--reap
--connection C2
--reap
COMMIT;
--connection C3
--reap
COMMIT;
--connection default
--disconnect C1
--disconnect C2
--disconnect C3
DROP TABLE t1;
# Scenario:
# C1 obtains implicit lock
# C2 notices the implicit lock and decides to do impl-to-expl conversion
# C1 PREPARES
# C1 starts commit and pauses after removing itself from rw-list, but before
# (old code) changing state to TRX_STATE_COMMITED_IN_MEMORY
# (new code) removing explicit locks
# C3 ignores C1 (as it is no longer in rw-list) and decides to adds own exclusive lock on the record
# C2 finishes impl-to-explicit conversion
# C3 proceeds to add its own lock
# C1 finishes commit
# C2 gets the lock granted and commits
# C3 gets the lock granted and commits
CREATE TABLE t1(id INT PRIMARY KEY) ENGINE=InnoDB;
INSERT INTO t1 (id) VALUES (1),(3);
--connect(C1,localhost,root,,test)
--connect(C2,localhost,root,,test)
--connect(C3,localhost,root,,test)
--connection C1
XA START "xid0";
INSERT INTO t1 (id) VALUES (2);
--connection C2
BEGIN;
SET DEBUG_SYNC = "before_lock_rec_convert_impl_to_expl_for_trx
SIGNAL c2_decided
WAIT_FOR c2_can_convert";
SET DEBUG_SYNC = "after_lock_rec_convert_impl_to_expl_for_trx
SIGNAL c2_done_conversion";
SET DEBUG_SYNC = "after_lock_clust_rec_read_check_and_lock
SIGNAL c2_done_locking";
--send SELECT * FROM t1 WHERE id=2 FOR UPDATE
--connection C1
SET DEBUG_SYNC = "now WAIT_FOR c2_decided";
SET DEBUG_SYNC = "before_lock_trx_release_locks
SIGNAL c1_will_commit
WAIT_FOR c1_can_commit";
XA END "xid0";
XA PREPARE "xid0";
--send XA COMMIT "xid0"
--connection C3
BEGIN;
SET DEBUG_SYNC = "now WAIT_FOR c1_will_commit";
SET DEBUG_SYNC = "lock_wait_will_wait SIGNAL c3_will_wait";
SET DEBUG_SYNC = "after_lock_clust_rec_read_check_and_lock_impl_to_expl
SIGNAL c3_will_lock
WAIT_FOR c3_can_lock";
--send SELECT * FROM t1 WHERE id=2 FOR UPDATE
--connection default
SET DEBUG_SYNC = "now WAIT_FOR c3_will_lock";
SET DEBUG_SYNC = "now SIGNAL c2_can_convert";
SET DEBUG_SYNC = "now WAIT_FOR c2_done_conversion";
SET DEBUG_SYNC = "now WAIT_FOR c2_done_locking";
SET DEBUG_SYNC = "now SIGNAL c3_can_lock";
SET DEBUG_SYNC = "now WAIT_FOR c3_will_wait";
SET DEBUG_SYNC = "now SIGNAL c1_can_commit";
COMMIT;
--connection C1
--reap
--connection C2
--reap
COMMIT;
--connection C3
--reap
COMMIT;
--connection default
--disconnect C1
--disconnect C2
--disconnect C3
DROP TABLE t1;
# Scenario:
# C1 obtains implicit lock
# C2 notices the implicit lock and decides to do validation
# C1 starts commit and pauses after removing itself from rw-list, but before
# (old code) changing state to TRX_STATE_COMMITED_IN_MEMORY
# (new code) removing explicit locks
# C3 ignores C1 (as it is no longer in rw-list) and adds own exclusive lock on
# the record
# C2 performs validation
CREATE TABLE t1(id INT PRIMARY KEY,val INT, KEY val(val)) ENGINE=InnoDB;
INSERT INTO t1 (id,val) VALUES (1,1),(3,3);
--connect(C1,localhost,root,,test)
--connect(C2,localhost,root,,test)
--connect(C3,localhost,root,,test)
--connection C1
BEGIN;
INSERT INTO t1 (id,val) VALUES (2,2);
--connection C2
BEGIN;
SET DEBUG_SYNC = "lock_rec_convert_impl_to_expl_will_validate
SIGNAL c2_decided
WAIT_FOR c2_can_validate";
SET DEBUG_SYNC = "lock_wait_will_wait SIGNAL c2_will_wait";
--send SELECT * FROM t1 WHERE val=2 FOR UPDATE
--connection C1
SET DEBUG_SYNC = "now WAIT_FOR c2_decided";
SET DEBUG_SYNC = "before_lock_trx_release_locks
SIGNAL c1_will_commit
WAIT_FOR c1_can_commit";
--send COMMIT
--connection C3
BEGIN;
SET DEBUG_SYNC = "now WAIT_FOR c1_will_commit";
SELECT * FROM t1 WHERE val=2 FOR UPDATE;
SET DEBUG_SYNC = "now SIGNAL c2_can_validate";
SET DEBUG_SYNC = "now WAIT_FOR c2_will_wait";
SET DEBUG_SYNC = "now SIGNAL c1_can_commit";
COMMIT;
--connection C1
--reap
--connection C2
--reap
COMMIT;
--connection default
--disconnect C1
--disconnect C2
--disconnect C3
DROP TABLE t1;
# Scenario:
# C1 obtains implicit lock
# C2 notices the implicit lock and decides to do impl-to-expl conversion
# C1 starts commit and pauses after trx_erase_lists
# C3 ignores C1 (as it is no longer in rw-list) and adds own exclusive lock on
# the record
# C2 finishes impl-to-explicit conversion
# (at this point we have two X locks on the same row)
CREATE TABLE t1(id INT PRIMARY KEY) ENGINE=InnoDB;
INSERT INTO t1 (id) VALUES (1),(3);
--connect(C1,localhost,root,,test)
--connect(C2,localhost,root,,test)
--connect(C3,localhost,root,,test)
--connection C1
BEGIN;
INSERT INTO t1 (id) VALUES (2);
--connection C3
#ensure that C3 has assigned trx->id before we start hogging the trx_sys->mutex
BEGIN;
INSERT INTO t1 (id) VALUES (4);
--connection C2
BEGIN;
SET DEBUG_SYNC = "before_lock_rec_convert_impl_to_expl_for_trx
SIGNAL c2_decided
WAIT_FOR c2_can_convert";
SET DEBUG_SYNC = "after_lock_clust_rec_read_check_and_lock SIGNAL c2_will_wait";
--send SELECT * FROM t1 WHERE id=2 FOR UPDATE
--connection C1
SET DEBUG_SYNC = "now WAIT_FOR c2_decided";
SET DEBUG_SYNC = "after_trx_erase_lists
SIGNAL c1_will_commit
WAIT_FOR c1_can_commit";
--send COMMIT
--connection C3
SET DEBUG_SYNC = "now WAIT_FOR c1_will_commit";
SET DEBUG_SYNC = "after_lock_clust_rec_read_check_and_lock SIGNAL c2_can_convert WAIT_FOR c3_can_verify";
--send SELECT * FROM t1 WHERE id=2 FOR UPDATE;
--connection default
SET DEBUG_SYNC = "now WAIT_FOR c2_will_wait";
SET DEBUG_SYNC = "now SIGNAL c1_can_commit";
SET DEBUG_SYNC = "now SIGNAL c3_can_verify";
--connection C3
--reap
COMMIT;
--connection C1
--reap
--connection C2
--reap
COMMIT;
--connection default
--disconnect C1
--disconnect C2
--disconnect C3
DROP TABLE t1;
--source include/wait_until_count_sessions.inc
|
