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Speed up hash_index regression test.

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Commit f5ab0a14e made this test take substantially longer than it used
to.  With a bit more care, we can get the runtime back down while
achieving the same, or even a bit better, code coverage.

Mithun Cy

Discussion: https://postgr.es/m/CAD__Ouh-qaEb+rD7Uy-4g3xQYOrhPzHs-a_TrFAjiQ5azAW5+w@mail.gmail.com
This commit is contained in:
Tom Lane 2017-04-12 16:17:53 -04:00
parent 16ebab6886
commit 4a8bc39b08
2 changed files with 8 additions and 11 deletions
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9
src/test/regress/expected/hash_index.out
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@ -200,9 +200,9 @@ SELECT h.seqno AS f20000
-- Cause some overflow insert and splits.
--
CREATE TABLE hash_split_heap (keycol INT);
INSERT INTO hash_split_heap SELECT 1 FROM generate_series(1, 500) a;
CREATE INDEX hash_split_index on hash_split_heap USING HASH (keycol);
INSERT INTO hash_split_heap SELECT 1 FROM generate_series(1, 70000) a;
VACUUM FULL hash_split_heap;
INSERT INTO hash_split_heap SELECT 1 FROM generate_series(1, 5000) a;
-- Let's do a backward scan.
BEGIN;
SET enable_seqscan = OFF;
@ -213,11 +213,10 @@ MOVE BACKWARD 10000 FROM c;
MOVE BACKWARD ALL FROM c;
CLOSE c;
END;
-- DELETE, INSERT, REBUILD INDEX.
-- DELETE, INSERT, VACUUM.
DELETE FROM hash_split_heap WHERE keycol = 1;
INSERT INTO hash_split_heap SELECT a/2 FROM generate_series(1, 50000) a;
INSERT INTO hash_split_heap SELECT a/2 FROM generate_series(1, 25000) a;
VACUUM hash_split_heap;
REINDEX INDEX hash_split_index;
-- Clean up.
DROP TABLE hash_split_heap;
-- Index on temp table.

10
src/test/regress/sql/hash_index.sql
View File

@ -156,10 +156,9 @@ SELECT h.seqno AS f20000
-- Cause some overflow insert and splits.
--
CREATE TABLE hash_split_heap (keycol INT);
INSERT INTO hash_split_heap SELECT 1 FROM generate_series(1, 500) a;
CREATE INDEX hash_split_index on hash_split_heap USING HASH (keycol);
INSERT INTO hash_split_heap SELECT 1 FROM generate_series(1, 70000) a;
VACUUM FULL hash_split_heap;
INSERT INTO hash_split_heap SELECT 1 FROM generate_series(1, 5000) a;
-- Let's do a backward scan.
BEGIN;
@ -173,12 +172,11 @@ MOVE BACKWARD ALL FROM c;
CLOSE c;
END;
-- DELETE, INSERT, REBUILD INDEX.
-- DELETE, INSERT, VACUUM.
DELETE FROM hash_split_heap WHERE keycol = 1;
INSERT INTO hash_split_heap SELECT a/2 FROM generate_series(1, 50000) a;
INSERT INTO hash_split_heap SELECT a/2 FROM generate_series(1, 25000) a;
VACUUM hash_split_heap;
REINDEX INDEX hash_split_index;
-- Clean up.
DROP TABLE hash_split_heap;