mirror/postgresql
2
0
Fork 0
mirror of https://git.postgresql.org/git/postgresql.git synced 2025-03-07 19:47:50 +08:00
Code Issues Packages Projects Releases Wiki Activity

Add regression tests for SELECT FOR UPDATE/SHARE NOWAIT.

Browse Source 
Thomas Munro
This commit is contained in:
Heikki Linnakangas 2014-08-25 20:12:01 +03:00
parent d153b80161
commit 9ee16b49f0
7 changed files with 223 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
src/test/isolation/expected/nowait-2.out Normal file
View File

@ -0,0 +1,43 @@
Parsed test spec with 2 sessions
starting permutation: s1a s2a s2b s1b s2c
step s1a: SELECT * FROM foo FOR SHARE NOWAIT;
id data
1 x
step s2a: SELECT * FROM foo FOR SHARE NOWAIT;
id data
1 x
step s2b: SELECT * FROM foo FOR UPDATE NOWAIT;
ERROR: could not obtain lock on row in relation "foo"
step s1b: COMMIT;
step s2c: COMMIT;
starting permutation: s2a s1a s2b s1b s2c
step s2a: SELECT * FROM foo FOR SHARE NOWAIT;
id data
1 x
step s1a: SELECT * FROM foo FOR SHARE NOWAIT;
id data
1 x
step s2b: SELECT * FROM foo FOR UPDATE NOWAIT;
ERROR: could not obtain lock on row in relation "foo"
step s1b: COMMIT;
step s2c: COMMIT;
starting permutation: s2a s2b s1a s1b s2c
step s2a: SELECT * FROM foo FOR SHARE NOWAIT;
id data
1 x
step s2b: SELECT * FROM foo FOR UPDATE NOWAIT;
id data
1 x
step s1a: SELECT * FROM foo FOR SHARE NOWAIT;
ERROR: could not obtain lock on row in relation "foo"
step s1b: COMMIT;
step s2c: COMMIT;

17
src/test/isolation/expected/nowait-3.out Normal file
View File

@ -0,0 +1,17 @@
Parsed test spec with 3 sessions
starting permutation: s1a s2a s3a s1b s2b s3b
step s1a: SELECT * FROM foo FOR UPDATE;
id data
1 x
step s2a: SELECT * FROM foo FOR UPDATE; <waiting ...>
step s3a: SELECT * FROM foo FOR UPDATE NOWAIT;
ERROR: could not obtain lock on row in relation "foo"
step s1b: COMMIT;
step s2a: <... completed>
id data
1 x
step s2b: COMMIT;
step s3b: COMMIT;

65
src/test/isolation/expected/nowait.out Normal file
View File

@ -0,0 +1,65 @@
Parsed test spec with 2 sessions
starting permutation: s1a s1b s2a s2b
step s1a: SELECT * FROM foo FOR UPDATE NOWAIT;
id data
1 x
step s1b: COMMIT;
step s2a: SELECT * FROM foo FOR UPDATE NOWAIT;
id data
1 x
step s2b: COMMIT;
starting permutation: s1a s2a s1b s2b
step s1a: SELECT * FROM foo FOR UPDATE NOWAIT;
id data
1 x
step s2a: SELECT * FROM foo FOR UPDATE NOWAIT;
ERROR: could not obtain lock on row in relation "foo"
step s1b: COMMIT;
step s2b: COMMIT;
starting permutation: s1a s2a s2b s1b
step s1a: SELECT * FROM foo FOR UPDATE NOWAIT;
id data
1 x
step s2a: SELECT * FROM foo FOR UPDATE NOWAIT;
ERROR: could not obtain lock on row in relation "foo"
step s2b: COMMIT;
step s1b: COMMIT;
starting permutation: s2a s1a s1b s2b
step s2a: SELECT * FROM foo FOR UPDATE NOWAIT;
id data
1 x
step s1a: SELECT * FROM foo FOR UPDATE NOWAIT;
ERROR: could not obtain lock on row in relation "foo"
step s1b: COMMIT;
step s2b: COMMIT;
starting permutation: s2a s1a s2b s1b
step s2a: SELECT * FROM foo FOR UPDATE NOWAIT;
id data
1 x
step s1a: SELECT * FROM foo FOR UPDATE NOWAIT;
ERROR: could not obtain lock on row in relation "foo"
step s2b: COMMIT;
step s1b: COMMIT;
starting permutation: s2a s2b s1a s1b
step s2a: SELECT * FROM foo FOR UPDATE NOWAIT;
id data
1 x
step s2b: COMMIT;
step s1a: SELECT * FROM foo FOR UPDATE NOWAIT;
id data
1 x
step s1b: COMMIT;

3
src/test/isolation/isolation_schedule
View File

@ -25,3 +25,6 @@ test: propagate-lock-delete
test: drop-index-concurrently-1
test: alter-table-1
test: timeouts
test: nowait
test: nowait-2
test: nowait-3

37
src/test/isolation/specs/nowait-2.spec Normal file
View File

@ -0,0 +1,37 @@
# Test NOWAIT with multixact locks.
setup
{
CREATE TABLE foo (
id int PRIMARY KEY,
data text NOT NULL
);
INSERT INTO foo VALUES (1, 'x');
}
teardown
{
DROP TABLE foo;
}
session "s1"
setup { BEGIN; }
step "s1a" { SELECT * FROM foo FOR SHARE NOWAIT; }
step "s1b" { COMMIT; }
session "s2"
setup { BEGIN; }
step "s2a" { SELECT * FROM foo FOR SHARE NOWAIT; }
step "s2b" { SELECT * FROM foo FOR UPDATE NOWAIT; }
step "s2c" { COMMIT; }
# s1 and s2 both get SHARE lock, creating a multixact lock, then s2
# tries to upgrade to UPDATE but aborts because it cannot acquire a
# multi-xact lock
permutation "s1a" "s2a" "s2b" "s1b" "s2c"
# the same but with the SHARE locks acquired in a different order, so
# s2 again aborts because it can't acquired a multi-xact lock
permutation "s2a" "s1a" "s2b" "s1b" "s2c"
# s2 acquires SHARE then UPDATE, then s1 tries to acquire SHARE but
# can't so aborts because it can't acquire a regular lock
permutation "s2a" "s2b" "s1a" "s1b" "s2c"

33
src/test/isolation/specs/nowait-3.spec Normal file
View File

@ -0,0 +1,33 @@
# Test NOWAIT with tuple locks.
setup
{
CREATE TABLE foo (
id int PRIMARY KEY,
data text NOT NULL
);
INSERT INTO foo VALUES (1, 'x');
}
teardown
{
DROP TABLE foo;
}
session "s1"
setup { BEGIN; }
step "s1a" { SELECT * FROM foo FOR UPDATE; }
step "s1b" { COMMIT; }
session "s2"
setup { BEGIN; }
step "s2a" { SELECT * FROM foo FOR UPDATE; }
step "s2b" { COMMIT; }
session "s3"
setup { BEGIN; }
step "s3a" { SELECT * FROM foo FOR UPDATE NOWAIT; }
step "s3b" { COMMIT; }
# s3 skips to second record due to tuple lock held by s2
permutation "s1a" "s2a" "s3a" "s1b" "s2b" "s3b"

25
src/test/isolation/specs/nowait.spec Normal file
View File

@ -0,0 +1,25 @@
# Test NOWAIT when regular row locks can't be acquired.
setup
{
CREATE TABLE foo (
id int PRIMARY KEY,
data text NOT NULL
);
INSERT INTO foo VALUES (1, 'x');
}
teardown
{
DROP TABLE foo;
}
session "s1"
setup { BEGIN; }
step "s1a" { SELECT * FROM foo FOR UPDATE NOWAIT; }
step "s1b" { COMMIT; }
session "s2"
setup { BEGIN; }
step "s2a" { SELECT * FROM foo FOR UPDATE NOWAIT; }
step "s2b" { COMMIT; }