^^&&^^

Edit File: tmpdir.test

--source include/have_innodb.inc
--source include/count_sessions.inc

--echo #
--echo # Bug #19183565 CREATE DYNAMIC INNODB_TMPDIR VARIABLE TO CONTROL
--echo #		WHERE INNODB WRITES TEMP FILES
--echo #

--echo # If innodb_tmpdir is NULL or "", temporary file will be created in
--echo # server configuration variable location(--tmpdir)

create table t1(a int primary key)engine=innodb;
show session variables like 'innodb_tmpdir';
alter table t1 add column b int not null;
set global innodb_tmpdir=NULL;
--echo # Connection con1
connect (con1,localhost,root);
show session variables like 'innodb_tmpdir';
alter table t1 add key(b);
connection default;
disconnect con1;
drop table t1;

--echo # innodb_tmpdir with invalid path.

create table t1(a int primary key)engine=innodb;
--error ER_WRONG_VALUE_FOR_VAR
set global innodb_tmpdir='wrong_value';
show warnings;
drop table t1;

--echo # innodb_tmpdir with mysql data directory path.

let $MYSQLD_DATADIR= `select @@datadir`;
create table t1(a text, b text, fulltext(a,b))engine=innodb;
insert into t1 values('test1', 'test2');
insert into t1 values('text1', 'text2');
--replace_result $MYSQLD_DATADIR MYSQL_DATADIR
--error ER_WRONG_VALUE_FOR_VAR
set global innodb_tmpdir = @@global.datadir;
--replace_regex /.*mysqld.1/DATADIR/
show warnings;
drop table t1;

--echo # innodb_tmpdir with valid location.
let $MYSQL_TMP_DIR= `select @@tmpdir`;
create table t1(a text, b text, fulltext(a,b))engine=innodb;
insert into t1 values('test1', 'test2');
insert into t1 values('text1', 'text2');
set @tmpdir = @@global.tmpdir;
set global innodb_tmpdir = @tmpdir;
show session variables like 'innodb_tmpdir';
--echo # Connection con3
connect (con3,localhost,root);
# Following alter using innodb_tmpdir as a path to create temporary files
alter table t1 add fulltext(b);
disconnect con3;
connection default;
set global innodb_tmpdir=NULL;
drop table t1;

--source include/wait_until_count_sessions.inc