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Add posting list tuple amcheck test case.

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Add a test case to contrib/amcheck that creates coverage of code paths
that are used to verify posting list tuples (tuples created when
deduplication merges together existing tuples to avoid a leaf page
split).
This commit is contained in:
Peter Geoghegan
2020-05-04 11:23:44 -07:00
parent 47046763c3
commit 20c6905dee
2 changed files with 16 additions and 2 deletions
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11
contrib/amcheck/expected/check_btree.out
View File

@ -10,7 +10,7 @@ ALTER TABLE delete_test_table SET (autovacuum_enabled = false);
INSERT INTO bttest_a SELECT * FROM generate_series(1, 100000);
INSERT INTO bttest_b SELECT * FROM generate_series(100000, 1, -1);
INSERT INTO bttest_multi SELECT i, i%2 FROM generate_series(1, 100000) as i;
CREATE INDEX bttest_a_idx ON bttest_a USING btree (id);
CREATE INDEX bttest_a_idx ON bttest_a USING btree (id) WITH (deduplicate_items = ON);
CREATE INDEX bttest_b_idx ON bttest_b USING btree (id);
CREATE UNIQUE INDEX bttest_multi_idx ON bttest_multi
USING btree (id) INCLUDE (data);
@ -102,6 +102,15 @@ WHERE relation = ANY(ARRAY['bttest_a', 'bttest_a_idx', 'bttest_b', 'bttest_b_idx
(0 rows)
COMMIT;
-- Deduplication
TRUNCATE bttest_a;
INSERT INTO bttest_a SELECT 42 FROM generate_series(1, 2000);
SELECT bt_index_check('bttest_a_idx', true);
bt_index_check
----------------
(1 row)
-- normal check outside of xact for index with included columns
SELECT bt_index_check('bttest_multi_idx');
bt_index_check

7
contrib/amcheck/sql/check_btree.sql
View File

@ -13,7 +13,7 @@ INSERT INTO bttest_a SELECT * FROM generate_series(1, 100000);
INSERT INTO bttest_b SELECT * FROM generate_series(100000, 1, -1);
INSERT INTO bttest_multi SELECT i, i%2 FROM generate_series(1, 100000) as i;
CREATE INDEX bttest_a_idx ON bttest_a USING btree (id);
CREATE INDEX bttest_a_idx ON bttest_a USING btree (id) WITH (deduplicate_items = ON);
CREATE INDEX bttest_b_idx ON bttest_b USING btree (id);
CREATE UNIQUE INDEX bttest_multi_idx ON bttest_multi
USING btree (id) INCLUDE (data);
@ -67,6 +67,11 @@ WHERE relation = ANY(ARRAY['bttest_a', 'bttest_a_idx', 'bttest_b', 'bttest_b_idx
AND pid = pg_backend_pid();
COMMIT;
-- Deduplication
TRUNCATE bttest_a;
INSERT INTO bttest_a SELECT 42 FROM generate_series(1, 2000);
SELECT bt_index_check('bttest_a_idx', true);
-- normal check outside of xact for index with included columns
SELECT bt_index_check('bttest_multi_idx');
-- more expansive tests for index with included columns