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# Test for Bug 14006907 - FOREIGN KEY PROBLEMS AFTER DROP INDEX
--source include/have_debug_sync.inc
# Save the initial number of concurrent sessions.
--source include/count_sessions.inc
SET DEBUG_SYNC='RESET';
CREATE TABLE t1 (c1 INT PRIMARY KEY, c2 INT, INDEX(c2)) ENGINE = InnoDB;
CREATE TABLE t2 (
c2 INT PRIMARY KEY,
CONSTRAINT t2c2 FOREIGN KEY (c2) REFERENCES t1 (c2))
ENGINE = InnoDB;
--error ER_DROP_INDEX_FK
DROP INDEX c2 ON t1;
DROP TABLE t2;
SET DEBUG_SYNC = 'innodb_after_inplace_alter_table SIGNAL drop WAIT_FOR fk';
--send
DROP INDEX c2 ON t1;
--echo # Establish session con1 (user=root)
connect (con1,localhost,root,,);
--echo # Session con1
connection con1;
SET DEBUG_SYNC = 'now WAIT_FOR drop';
--send
CREATE TABLE t2 (
c2 INT PRIMARY KEY,
CONSTRAINT t2c2 FOREIGN KEY (c2) REFERENCES t1 (c2))
ENGINE = InnoDB;
--echo # Establish session con2 (user=root)
connect (con2,localhost,root,,);
--echo # After WL#6049 CREATE TABLE t2 must be blocked while trying
--echo # to acquire exclusive metadata lock on t1.
let $wait_condition=
SELECT COUNT(*) = 1 FROM information_schema.processlist
WHERE state = "Waiting for table metadata lock" AND
info LIKE "CREATE TABLE t2 %";
--source include/wait_condition.inc
SET DEBUG_SYNC = 'now SIGNAL fk';
disconnect con2;
--echo # Switching to connection con1.
connection con1;
--echo # So no chance for CREATE TABLE t2 to sneak before DROP INDEX
--echo # is committed in and succeed.
--echo /* reap */ CREATE TABLE t2 ...
--error ER_FK_NO_INDEX_PARENT
--reap
disconnect con1;
--echo # Session default
connection default;
--echo /* reap */ DROP INDEX c2 ON t1;
reap;
--error ER_FK_NO_INDEX_PARENT
CREATE TABLE t2 (
c2 INT PRIMARY KEY,
CONSTRAINT t2c2 FOREIGN KEY (c2) REFERENCES t1 (c2))
ENGINE = InnoDB;
SET DEBUG_SYNC='RESET';
DROP TABLE t1;
# Check that all connections opened by test cases in this file are really
# gone so execution of other tests won't be affected by their presence.
--source include/wait_until_count_sessions.inc
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