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Add explain summary support (#3046) 

Fixes #2922 and also adds explain analyze regression tests
pull/3050/head
Jelte Fennema 2019-09-30 10:58:49 +02:00 committed by GitHub
parent 9c2c50d875
commit 82ec918b29
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 82 additions and 7 deletions
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3
src/backend/distributed/planner/multi_explain.c
View File

@ -616,13 +616,14 @@ BuildRemoteExplainQuery(char *queryString, ExplainState *es)
appendStringInfo(explainQuery,
"EXPLAIN (ANALYZE %s, VERBOSE %s, "
"COSTS %s, BUFFERS %s, TIMING %s, "
"COSTS %s, BUFFERS %s, TIMING %s, SUMMARY %s, "
"FORMAT %s) %s",
es->analyze ? "TRUE" : "FALSE",
es->verbose ? "TRUE" : "FALSE",
es->costs ? "TRUE" : "FALSE",
es->buffers ? "TRUE" : "FALSE",
es->timing ? "TRUE" : "FALSE",
es->summary ? "TRUE" : "FALSE",
formatStr,
queryString);

68
src/test/regress/expected/multi_explain.out
View File

@ -280,6 +280,23 @@ Sort
-> HashAggregate
Group Key: l_quantity
-> Seq Scan on lineitem_290000 lineitem
-- Test analyze (with TIMING FALSE and SUMMARY FALSE for consistent output)
EXPLAIN (COSTS FALSE, ANALYZE TRUE, TIMING FALSE, SUMMARY FALSE)
SELECT l_quantity, count(*) count_quantity FROM lineitem
GROUP BY l_quantity ORDER BY count_quantity, l_quantity;
Sort (actual rows=50 loops=1)
Sort Key: COALESCE((pg_catalog.sum((COALESCE((pg_catalog.sum(remote_scan.count_quantity))::bigint, '0'::bigint))))::bigint, '0'::bigint), remote_scan.l_quantity
Sort Method: quicksort Memory: 27kB
-> HashAggregate (actual rows=50 loops=1)
Group Key: remote_scan.l_quantity
-> Custom Scan (Citus Adaptive) (actual rows=100 loops=1)
Task Count: 2
Tasks Shown: One of 2
-> Task
Node: host=localhost port=57638 dbname=regression
-> HashAggregate (actual rows=50 loops=1)
Group Key: l_quantity
-> Seq Scan on lineitem_290000 lineitem (actual rows=6000 loops=1)
-- Test verbose
EXPLAIN (COSTS FALSE, VERBOSE TRUE)
SELECT sum(l_quantity) / avg(l_quantity) FROM lineitem;
@ -341,6 +358,23 @@ Custom Scan (Citus Adaptive)
-> Index Scan using lineitem_pkey_290000 on lineitem_290000 lineitem
Index Cond: (l_orderkey = 1)
Filter: (l_partkey = 0)
-- Test analyze (with TIMING FALSE and SUMMARY FALSE for consistent output)
BEGIN;
EXPLAIN (COSTS FALSE, ANALYZE TRUE, TIMING FALSE, SUMMARY FALSE)
UPDATE lineitem
SET l_suppkey = 12
WHERE l_orderkey = 1 AND l_partkey = 0;
Custom Scan (Citus Adaptive) (actual rows=0 loops=1)
Task Count: 1
Tasks Shown: All
-> Task
Node: host=localhost port=57638 dbname=regression
-> Update on lineitem_290000 lineitem (actual rows=0 loops=1)
-> Index Scan using lineitem_pkey_290000 on lineitem_290000 lineitem (actual rows=0 loops=1)
Index Cond: (l_orderkey = 1)
Filter: (l_partkey = 0)
Rows Removed by Filter: 6
ROLLBACk;
-- Test delete
EXPLAIN (COSTS FALSE)
DELETE FROM lineitem
@ -816,6 +850,28 @@ Custom Scan (Citus Adaptive)
Node: host=localhost port=57638 dbname=regression
-> Delete on lineitem_hash_part_360044 lineitem_hash_part
-> Seq Scan on lineitem_hash_part_360044 lineitem_hash_part
-- Test analyze (with TIMING FALSE and SUMMARY FALSE for consistent output)
EXPLAIN (COSTS FALSE, ANALYZE TRUE, TIMING FALSE, SUMMARY FALSE)
SELECT l_quantity, count(*) count_quantity FROM lineitem
GROUP BY l_quantity ORDER BY count_quantity, l_quantity;
Sort (actual rows=50 loops=1)
Sort Key: COALESCE((pg_catalog.sum((COALESCE((pg_catalog.sum(remote_scan.count_quantity))::bigint, '0'::bigint))))::bigint, '0'::bigint), remote_scan.l_quantity
Sort Method: quicksort Memory: 27kB
-> HashAggregate (actual rows=50 loops=1)
Group Key: remote_scan.l_quantity
-> Custom Scan (Citus Adaptive) (actual rows=100 loops=1)
Task Count: 2
Tasks Shown: All
-> Task
Node: host=localhost port=57638 dbname=regression
-> HashAggregate (actual rows=50 loops=1)
Group Key: l_quantity
-> Seq Scan on lineitem_290000 lineitem (actual rows=6000 loops=1)
-> Task
Node: host=localhost port=57637 dbname=regression
-> HashAggregate (actual rows=50 loops=1)
Group Key: l_quantity
-> Seq Scan on lineitem_290001 lineitem (actual rows=6000 loops=1)
SET citus.explain_all_tasks TO off;
-- Test update with subquery
EXPLAIN (COSTS FALSE)
@ -1102,7 +1158,7 @@ Custom Scan (Citus INSERT ... SELECT via coordinator)
Task Count: 4
Tasks Shown: One of 4
-> Task
Node: host=localhost port=57637 dbname=regression
Node: host=localhost port=57638 dbname=regression
-> Limit
-> Seq Scan on orders_hash_part_360045 orders_hash_part
SELECT true AS valid FROM explain_json($$
@ -1119,7 +1175,7 @@ Custom Scan (Citus INSERT ... SELECT via coordinator)
Task Count: 4
Tasks Shown: One of 4
-> Task
Node: host=localhost port=57637 dbname=regression
Node: host=localhost port=57638 dbname=regression
-> Limit
-> Seq Scan on orders_hash_part_360045 orders_hash_part
EXPLAIN (COSTS OFF)
@ -1170,7 +1226,7 @@ SELECT l_orderkey FROM series JOIN keys ON (s = l_orderkey)
ORDER BY s;
Custom Scan (Citus Adaptive)
Output: remote_scan.l_orderkey
-> Distributed Subplan 57_1
-> Distributed Subplan 60_1
-> HashAggregate
Output: remote_scan.l_orderkey
Group Key: remote_scan.l_orderkey
@ -1185,7 +1241,7 @@ Custom Scan (Citus Adaptive)
Group Key: lineitem_hash_part.l_orderkey
-> Seq Scan on public.lineitem_hash_part_360041 lineitem_hash_part
Output: l_orderkey, l_partkey, l_suppkey, l_linenumber, l_quantity, l_extendedprice, l_discount, l_tax, l_returnflag, l_linestatus, l_shipdate, l_commitdate, l_receiptdate, l_shipinstruct, l_shipmode, l_comment
-> Distributed Subplan 57_2
-> Distributed Subplan 60_2
-> Function Scan on pg_catalog.generate_series s
Output: s
Function Call: generate_series(1, 10)
@ -1201,13 +1257,13 @@ Custom Scan (Citus Adaptive)
Sort Key: intermediate_result.s
-> Function Scan on pg_catalog.read_intermediate_result intermediate_result
Output: intermediate_result.s
Function Call: read_intermediate_result('57_2'::text, 'binary'::citus_copy_format)
Function Call: read_intermediate_result('60_2'::text, 'binary'::citus_copy_format)
-> Sort
Output: intermediate_result_1.l_orderkey
Sort Key: intermediate_result_1.l_orderkey
-> Function Scan on pg_catalog.read_intermediate_result intermediate_result_1
Output: intermediate_result_1.l_orderkey
Function Call: read_intermediate_result('57_1'::text, 'binary'::citus_copy_format)
Function Call: read_intermediate_result('60_1'::text, 'binary'::citus_copy_format)
SELECT true AS valid FROM explain_json($$
WITH result AS (
SELECT l_quantity, count(*) count_quantity FROM lineitem

18
src/test/regress/sql/multi_explain.sql
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@ -84,6 +84,11 @@ EXPLAIN (COSTS FALSE, FORMAT TEXT)
SELECT l_quantity, count(*) count_quantity FROM lineitem
GROUP BY l_quantity ORDER BY count_quantity, l_quantity;
-- Test analyze (with TIMING FALSE and SUMMARY FALSE for consistent output)
EXPLAIN (COSTS FALSE, ANALYZE TRUE, TIMING FALSE, SUMMARY FALSE)
SELECT l_quantity, count(*) count_quantity FROM lineitem
GROUP BY l_quantity ORDER BY count_quantity, l_quantity;
-- Test verbose
EXPLAIN (COSTS FALSE, VERBOSE TRUE)
SELECT sum(l_quantity) / avg(l_quantity) FROM lineitem;
@ -104,6 +109,14 @@ EXPLAIN (COSTS FALSE)
SET l_suppkey = 12
WHERE l_orderkey = 1 AND l_partkey = 0;
-- Test analyze (with TIMING FALSE and SUMMARY FALSE for consistent output)
BEGIN;
EXPLAIN (COSTS FALSE, ANALYZE TRUE, TIMING FALSE, SUMMARY FALSE)
UPDATE lineitem
SET l_suppkey = 12
WHERE l_orderkey = 1 AND l_partkey = 0;
ROLLBACk;
-- Test delete
EXPLAIN (COSTS FALSE)
DELETE FROM lineitem
@ -392,6 +405,11 @@ EXPLAIN (COSTS FALSE)
EXPLAIN (COSTS FALSE)
DELETE FROM lineitem_hash_part;
-- Test analyze (with TIMING FALSE and SUMMARY FALSE for consistent output)
EXPLAIN (COSTS FALSE, ANALYZE TRUE, TIMING FALSE, SUMMARY FALSE)
SELECT l_quantity, count(*) count_quantity FROM lineitem
GROUP BY l_quantity ORDER BY count_quantity, l_quantity;
SET citus.explain_all_tasks TO off;
-- Test update with subquery