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Increase parallel bitmap scan test coverage. 

Author: Dilip Kumar
Discussion: https://postgr.es/m/20170331184603.qcp7t4md5bzxbx32@alap3.anarazel.de
This commit is contained in:
Andres Freund 2017-04-06 13:36:54 -07:00
parent 6f1b9aaae3
commit 5a5931533e
2 changed files with 52 additions and 8 deletions
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40
src/test/regress/expected/select_parallel.out
View File

@ -172,22 +172,50 @@ reset enable_bitmapscan;
-- test parallel bitmap heap scan.
set enable_seqscan to off;
set enable_indexscan to off;
set enable_hashjoin to off;
set enable_mergejoin to off;
set enable_material to off;
set effective_io_concurrency=50;
set work_mem='64kB'; --set small work mem to force lossy pages
explain (costs off)
select count((unique1)) from tenk1 where hundred > 1;
select count(*) from tenk1, tenk2 where tenk1.hundred > 1 and tenk2.thousand=0;
QUERY PLAN
------------------------------------------------------------
Finalize Aggregate
-> Gather
Workers Planned: 4
-> Partial Aggregate
Aggregate
-> Nested Loop
-> Seq Scan on tenk2
Filter: (thousand = 0)
-> Gather
Workers Planned: 4
-> Parallel Bitmap Heap Scan on tenk1
Recheck Cond: (hundred > 1)
-> Bitmap Index Scan on tenk1_hundred
Index Cond: (hundred > 1)
(8 rows)
(10 rows)
select count(*) from tenk1, tenk2 where tenk1.hundred > 1 and tenk2.thousand=0;
count
-------
98000
(1 row)
create table bmscantest (a int, t text);
insert into bmscantest select r, 'fooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo' FROM generate_series(1,100000) r;
create index i_bmtest ON bmscantest(a);
select count(*) from bmscantest where a>1;
count
-------
99999
(1 row)
reset enable_seqscan;
reset enable_indexscan;
reset enable_hashjoin;
reset enable_mergejoin;
reset enable_material;
reset effective_io_concurrency;
reset work_mem;
drop table bmscantest;
-- test parallel merge join path.
set enable_hashjoin to off;
set enable_nestloop to off;

20
src/test/regress/sql/select_parallel.sql
View File

@ -67,12 +67,28 @@ reset enable_bitmapscan;
-- test parallel bitmap heap scan.
set enable_seqscan to off;
set enable_indexscan to off;
set enable_hashjoin to off;
set enable_mergejoin to off;
set enable_material to off;
set effective_io_concurrency=50;
set work_mem='64kB'; --set small work mem to force lossy pages
explain (costs off)
select count((unique1)) from tenk1 where hundred > 1;
select count(*) from tenk1, tenk2 where tenk1.hundred > 1 and tenk2.thousand=0;
select count(*) from tenk1, tenk2 where tenk1.hundred > 1 and tenk2.thousand=0;
create table bmscantest (a int, t text);
insert into bmscantest select r, 'fooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo' FROM generate_series(1,100000) r;
create index i_bmtest ON bmscantest(a);
select count(*) from bmscantest where a>1;
reset enable_seqscan;
reset enable_indexscan;
reset enable_hashjoin;
reset enable_mergejoin;
reset enable_material;
reset effective_io_concurrency;
reset work_mem;
drop table bmscantest;
-- test parallel merge join path.
set enable_hashjoin to off;