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Add EXPLAIN regression test with subplans

pull/1888/head
Marco Slot 2017-12-17 22:00:25 +01:00
parent 5e0539efa3
commit 6a6e986c2b
3 changed files with 181 additions and 0 deletions
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73
src/test/regress/expected/multi_explain.out
View File

@ -713,6 +713,7 @@ Limit
Sort Key: events.event_time DESC
-> Seq Scan on events_1400029 events
Filter: (composite_id = users.composite_id)
RESET citus.subquery_pushdown;
-- Test all tasks output
SET citus.explain_all_tasks TO on;
EXPLAIN (COSTS FALSE)
@ -1115,3 +1116,75 @@ Custom Scan (Citus INSERT ... SELECT via coordinator)
-> Append
-> Function Scan on generate_series s
-> Function Scan on generate_series s_1
-- explain with recursive planning
EXPLAIN (COSTS OFF, VERBOSE true)
WITH keys AS (
SELECT DISTINCT l_orderkey FROM lineitem_hash_part
),
series AS (
SELECT s FROM generate_series(1,10) s
)
SELECT l_orderkey FROM series JOIN keys ON (s = l_orderkey)
ORDER BY s;
Custom Scan (Citus Router)
Output: remote_scan.l_orderkey
-> Distributed Subplan 54_1
-> HashAggregate
Output: remote_scan.l_orderkey
Group Key: remote_scan.l_orderkey
-> Custom Scan (Citus Real-Time)
Output: remote_scan.l_orderkey
Task Count: 4
Tasks Shown: One of 4
-> Task
Node: host=localhost port=57637 dbname=regression
-> HashAggregate
Output: l_orderkey
Group Key: lineitem_hash_part.l_orderkey
-> Seq Scan on public.lineitem_hash_part_360038 lineitem_hash_part
Output: l_orderkey, l_partkey, l_suppkey, l_linenumber, l_quantity, l_extendedprice, l_discount, l_tax, l_returnflag, l_linestatus, l_shipdate, l_commitdate, l_receiptdate, l_shipinstruct, l_shipmode, l_comment
-> Distributed Subplan 54_2
-> Function Scan on pg_catalog.generate_series s
Output: s
Function Call: generate_series(1, 10)
Task Count: 1
Tasks Shown: All
-> Task
Node: host=localhost port=57638 dbname=regression
-> Merge Join
Output: intermediate_result_1.l_orderkey, intermediate_result.s
Merge Cond: (intermediate_result.s = intermediate_result_1.l_orderkey)
-> Sort
Output: intermediate_result.s
Sort Key: intermediate_result.s
-> Function Scan on pg_catalog.read_intermediate_result intermediate_result
Output: intermediate_result.s
Function Call: read_intermediate_result('54_2'::text, 'binary'::citus_copy_format)
-> Sort
Output: intermediate_result_1.l_orderkey
Sort Key: intermediate_result_1.l_orderkey
-> Function Scan on pg_catalog.read_intermediate_result intermediate_result_1
Output: intermediate_result_1.l_orderkey
Function Call: read_intermediate_result('54_1'::text, 'binary'::citus_copy_format)
SELECT true AS valid FROM explain_json($$
WITH result AS (
SELECT l_quantity, count(*) count_quantity FROM lineitem
GROUP BY l_quantity ORDER BY count_quantity, l_quantity
),
series AS (
SELECT s FROM generate_series(1,10) s
)
SELECT * FROM result JOIN series ON (s = count_quantity) JOIN orders_hash_part ON (s = o_orderkey)
$$);
t
SELECT true AS valid FROM explain_xml($$
WITH result AS (
SELECT l_quantity, count(*) count_quantity FROM lineitem
GROUP BY l_quantity ORDER BY count_quantity, l_quantity
),
series AS (
SELECT s FROM generate_series(1,10) s
)
SELECT * FROM result JOIN series ON (s = l_quantity) JOIN orders_hash_part ON (s = o_orderkey)
$$);
t

73
src/test/regress/expected/multi_explain_0.out
View File

@ -713,6 +713,7 @@ Limit
Sort Key: events.event_time DESC
-> Seq Scan on events_1400029 events
Filter: (composite_id = users.composite_id)
RESET citus.subquery_pushdown;
-- Test all tasks output
SET citus.explain_all_tasks TO on;
EXPLAIN (COSTS FALSE)
@ -1115,3 +1116,75 @@ Custom Scan (Citus INSERT ... SELECT via coordinator)
-> Append
-> Function Scan on generate_series s
-> Function Scan on generate_series s_1
-- explain with recursive planning
EXPLAIN (COSTS OFF, VERBOSE true)
WITH keys AS (
SELECT DISTINCT l_orderkey FROM lineitem_hash_part
),
series AS (
SELECT s FROM generate_series(1,10) s
)
SELECT l_orderkey FROM series JOIN keys ON (s = l_orderkey)
ORDER BY s;
Custom Scan (Citus Router)
Output: remote_scan.l_orderkey
-> Distributed Subplan 54_1
-> HashAggregate
Output: remote_scan.l_orderkey
Group Key: remote_scan.l_orderkey
-> Custom Scan (Citus Real-Time)
Output: remote_scan.l_orderkey
Task Count: 4
Tasks Shown: One of 4
-> Task
Node: host=localhost port=57637 dbname=regression
-> HashAggregate
Output: l_orderkey
Group Key: lineitem_hash_part.l_orderkey
-> Seq Scan on public.lineitem_hash_part_360038 lineitem_hash_part
Output: l_orderkey, l_partkey, l_suppkey, l_linenumber, l_quantity, l_extendedprice, l_discount, l_tax, l_returnflag, l_linestatus, l_shipdate, l_commitdate, l_receiptdate, l_shipinstruct, l_shipmode, l_comment
-> Distributed Subplan 54_2
-> Function Scan on pg_catalog.generate_series s
Output: s
Function Call: generate_series(1, 10)
Task Count: 1
Tasks Shown: All
-> Task
Node: host=localhost port=57638 dbname=regression
-> Merge Join
Output: intermediate_result_1.l_orderkey, intermediate_result.s
Merge Cond: (intermediate_result.s = intermediate_result_1.l_orderkey)
-> Sort
Output: intermediate_result.s
Sort Key: intermediate_result.s
-> Function Scan on pg_catalog.read_intermediate_result intermediate_result
Output: intermediate_result.s
Function Call: read_intermediate_result('54_2'::text, 'binary'::citus_copy_format)
-> Sort
Output: intermediate_result_1.l_orderkey
Sort Key: intermediate_result_1.l_orderkey
-> Function Scan on pg_catalog.read_intermediate_result intermediate_result_1
Output: intermediate_result_1.l_orderkey
Function Call: read_intermediate_result('54_1'::text, 'binary'::citus_copy_format)
SELECT true AS valid FROM explain_json($$
WITH result AS (
SELECT l_quantity, count(*) count_quantity FROM lineitem
GROUP BY l_quantity ORDER BY count_quantity, l_quantity
),
series AS (
SELECT s FROM generate_series(1,10) s
)
SELECT * FROM result JOIN series ON (s = count_quantity) JOIN orders_hash_part ON (s = o_orderkey)
$$);
t
SELECT true AS valid FROM explain_xml($$
WITH result AS (
SELECT l_quantity, count(*) count_quantity FROM lineitem
GROUP BY l_quantity ORDER BY count_quantity, l_quantity
),
series AS (
SELECT s FROM generate_series(1,10) s
)
SELECT * FROM result JOIN series ON (s = l_quantity) JOIN orders_hash_part ON (s = o_orderkey)
$$);
t

35
src/test/regress/sql/multi_explain.sql
View File

@ -356,6 +356,8 @@ ORDER BY
LIMIT
10;
RESET citus.subquery_pushdown;
-- Test all tasks output
SET citus.explain_all_tasks TO on;
@ -519,3 +521,36 @@ EXPLAIN (COSTS OFF)
INSERT INTO lineitem_hash_part
( SELECT s FROM generate_series(1,5) s) UNION
( SELECT s FROM generate_series(5,10) s);
-- explain with recursive planning
EXPLAIN (COSTS OFF, VERBOSE true)
WITH keys AS (
SELECT DISTINCT l_orderkey FROM lineitem_hash_part
),
series AS (
SELECT s FROM generate_series(1,10) s
)
SELECT l_orderkey FROM series JOIN keys ON (s = l_orderkey)
ORDER BY s;
SELECT true AS valid FROM explain_json($$
WITH result AS (
SELECT l_quantity, count(*) count_quantity FROM lineitem
GROUP BY l_quantity ORDER BY count_quantity, l_quantity
),
series AS (
SELECT s FROM generate_series(1,10) s
)
SELECT * FROM result JOIN series ON (s = count_quantity) JOIN orders_hash_part ON (s = o_orderkey)
$$);
SELECT true AS valid FROM explain_xml($$
WITH result AS (
SELECT l_quantity, count(*) count_quantity FROM lineitem
GROUP BY l_quantity ORDER BY count_quantity, l_quantity
),
series AS (
SELECT s FROM generate_series(1,10) s
)
SELECT * FROM result JOIN series ON (s = l_quantity) JOIN orders_hash_part ON (s = o_orderkey)
$$);