DROP TABLE IF EXISTS t1;
DROP DATABASE IF EXISTS mysqltest2;
# Creating two non colliding tables mysqltest2.t1 and test.t1
# test.t1 have partitions in mysqltest2-directory!
# user root:
CREATE USER mysqltest_1@localhost;
CREATE DATABASE mysqltest2;
USE mysqltest2;
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (0);
# user mysqltest_1:
USE test;
CREATE TABLE t1 (a INT)
PARTITION BY LIST (a) (
PARTITION p0 VALUES IN (0)
DATA DIRECTORY 'MYSQLTEST_VARDIR/master-data/mysqltest2'
     INDEX DIRECTORY 'MYSQLTEST_VARDIR/master-data/mysqltest2',
PARTITION p1 VALUES IN (1)
DATA DIRECTORY 'MYSQLTEST_VARDIR/master-data/test'
     INDEX DIRECTORY 'MYSQLTEST_VARDIR/master-data/test',
PARTITION p2 VALUES IN (2)
);
# without the patch for bug#32091 this would create
# files mysqltest2/t1.MYD + .MYI and possible overwrite
# the mysqltest2.t1 table (depending on bug#32111)
ALTER TABLE t1 REMOVE PARTITIONING;
INSERT INTO t1 VALUES (1);
SELECT * FROM t1;
a
1
# user root:
USE mysqltest2;
FLUSH TABLES;
# if the patch works, this should be different
# and before the patch they were the same!
SELECT * FROM t1;
a
0
USE test;
SELECT * FROM t1;
a
1
DROP TABLE t1;
DROP DATABASE mysqltest2;
# test that symlinks can not overwrite files when CREATE TABLE
# user root:
CREATE DATABASE mysqltest2;
USE mysqltest2;
CREATE TABLE t1 (a INT)
PARTITION BY LIST (a) (
PARTITION p0 VALUES IN (0)
DATA DIRECTORY 'MYSQLTEST_VARDIR/master-data/mysqltest2'
     INDEX DIRECTORY 'MYSQLTEST_VARDIR/master-data/mysqltest2',
PARTITION p1 VALUES IN (1)
DATA DIRECTORY 'MYSQLTEST_VARDIR/master-data/test'
     INDEX DIRECTORY 'MYSQLTEST_VARDIR/master-data/test'
   );
# user mysqltest_1:
USE test;
CREATE TABLE t1 (a INT)
PARTITION BY LIST (a) (
PARTITION p0 VALUES IN (0)
DATA DIRECTORY 'MYSQLTEST_VARDIR/master-data/mysqltest2'
     INDEX DIRECTORY 'MYSQLTEST_VARDIR/master-data/mysqltest2',
PARTITION p1 VALUES IN (1)
DATA DIRECTORY 'MYSQLTEST_VARDIR/master-data/test'
     INDEX DIRECTORY 'MYSQLTEST_VARDIR/master-data/test'
   );
Got one of the listed errors
CREATE TABLE t1 (a INT)
PARTITION BY LIST (a) (
PARTITION p0 VALUES IN (0)
DATA DIRECTORY 'MYSQLTEST_VARDIR/master-data/test'
     INDEX DIRECTORY 'MYSQLTEST_VARDIR/master-data/test',
PARTITION p1 VALUES IN (1)
DATA DIRECTORY 'MYSQLTEST_VARDIR/master-data/mysqltest2'
     INDEX DIRECTORY 'MYSQLTEST_VARDIR/master-data/mysqltest2'
  );
Got one of the listed errors
# user root (cleanup):
DROP DATABASE mysqltest2;
USE test;
DROP USER mysqltest_1@localhost;