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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
View File

@@ -200,9 +200,9 @@ SELECT h.seqno AS f20000
-- Cause some overflow insert and splits. -- Cause some overflow insert and splits.
-- --
CREATE TABLE hash_split_heap (keycol INT); 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); 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; INSERT INTO hash_split_heap SELECT 1 FROM generate_series(1, 5000) a;
VACUUM FULL hash_split_heap;
-- Let's do a backward scan. -- Let's do a backward scan.
BEGIN; BEGIN;
SET enable_seqscan = OFF; SET enable_seqscan = OFF;
@@ -213,11 +213,10 @@ MOVE BACKWARD 10000 FROM c;
MOVE BACKWARD ALL FROM c; MOVE BACKWARD ALL FROM c;
CLOSE c; CLOSE c;
END; END;
-- DELETE, INSERT, REBUILD INDEX. -- DELETE, INSERT, VACUUM.
DELETE FROM hash_split_heap WHERE keycol = 1; 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; VACUUM hash_split_heap;
REINDEX INDEX hash_split_index;
-- Clean up. -- Clean up.
DROP TABLE hash_split_heap; DROP TABLE hash_split_heap;
-- Index on temp table. -- 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. -- Cause some overflow insert and splits.
-- --
CREATE TABLE hash_split_heap (keycol INT); 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); 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; INSERT INTO hash_split_heap SELECT 1 FROM generate_series(1, 5000) a;
VACUUM FULL hash_split_heap;
-- Let's do a backward scan. -- Let's do a backward scan.
BEGIN; BEGIN;
@@ -173,12 +172,11 @@ MOVE BACKWARD ALL FROM c;
CLOSE c; CLOSE c;
END; END;
-- DELETE, INSERT, REBUILD INDEX. -- DELETE, INSERT, VACUUM.
DELETE FROM hash_split_heap WHERE keycol = 1; 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; VACUUM hash_split_heap;
REINDEX INDEX hash_split_index;
-- Clean up. -- Clean up.
DROP TABLE hash_split_heap; DROP TABLE hash_split_heap;