external
/
citus
mirror of https://github.com/citusdata/citus.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Adds information to explain output when using citus.explain_distributed_queries=false (#7412) 

Fixes https://github.com/citusdata/citus/issues/6490
pull/7425/head^2
Valery 2024-01-17 18:04:42 +03:00 committed by GitHub
parent 51e607878b
commit 6cf6cf37fd
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
6 changed files with 58 additions and 60 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/backend/distributed/planner/multi_explain.c
View File

@ -197,9 +197,7 @@ CitusExplainScan(CustomScanState *node, List *ancestors, struct ExplainState *es
if (!ExplainDistributedQueries) if (!ExplainDistributedQueries)
{ {
appendStringInfoSpaces(es->str, es->indent * 2); ExplainPropertyBool("citus.explain_distributed_queries", false, es);
appendStringInfo(es->str, "explain statements for distributed queries ");
appendStringInfo(es->str, "are not enabled\n");
return; return;
} }

36
src/test/regress/expected/multi_join_order_additional.out
View File

@ -77,10 +77,10 @@ DEBUG: Router planner cannot handle multi-shard select queries
LOG: join order: [ "lineitem" ][ local partition join "lineitem" ] LOG: join order: [ "lineitem" ][ local partition join "lineitem" ]
DEBUG: join prunable for intervals [-2147483648,-1] and [0,2147483647] DEBUG: join prunable for intervals [-2147483648,-1] and [0,2147483647]
DEBUG: join prunable for intervals [0,2147483647] and [-2147483648,-1] DEBUG: join prunable for intervals [0,2147483647] and [-2147483648,-1]
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Custom Scan (Citus Adaptive) Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(2 rows) (2 rows)
SET client_min_messages TO LOG; SET client_min_messages TO LOG;
@ -92,11 +92,11 @@ SELECT count(*) FROM lineitem, orders
WHERE (l_orderkey = o_orderkey AND l_quantity > 5) WHERE (l_orderkey = o_orderkey AND l_quantity > 5)
OR (l_orderkey = o_orderkey AND l_quantity < 10); OR (l_orderkey = o_orderkey AND l_quantity < 10);
LOG: join order: [ "lineitem" ][ local partition join "orders" ] LOG: join order: [ "lineitem" ][ local partition join "orders" ]
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Aggregate Aggregate
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(3 rows) (3 rows)
EXPLAIN (COSTS OFF) EXPLAIN (COSTS OFF)
@ -107,11 +107,11 @@ EXPLAIN (COSTS OFF)
SELECT count(*) FROM orders, lineitem_hash SELECT count(*) FROM orders, lineitem_hash
WHERE o_orderkey = l_orderkey; WHERE o_orderkey = l_orderkey;
LOG: join order: [ "orders" ][ dual partition join "lineitem_hash" ] LOG: join order: [ "orders" ][ dual partition join "lineitem_hash" ]
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Aggregate Aggregate
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(3 rows) (3 rows)
-- Verify we handle local joins between two hash-partitioned tables. -- Verify we handle local joins between two hash-partitioned tables.
@ -119,11 +119,11 @@ EXPLAIN (COSTS OFF)
SELECT count(*) FROM orders_hash, lineitem_hash SELECT count(*) FROM orders_hash, lineitem_hash
WHERE o_orderkey = l_orderkey; WHERE o_orderkey = l_orderkey;
LOG: join order: [ "orders_hash" ][ local partition join "lineitem_hash" ] LOG: join order: [ "orders_hash" ][ local partition join "lineitem_hash" ]
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Aggregate Aggregate
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(3 rows) (3 rows)
-- Validate that we can handle broadcast joins with hash-partitioned tables. -- Validate that we can handle broadcast joins with hash-partitioned tables.
@ -131,11 +131,11 @@ EXPLAIN (COSTS OFF)
SELECT count(*) FROM customer_hash, nation SELECT count(*) FROM customer_hash, nation
WHERE c_nationkey = n_nationkey; WHERE c_nationkey = n_nationkey;
LOG: join order: [ "customer_hash" ][ reference join "nation" ] LOG: join order: [ "customer_hash" ][ reference join "nation" ]
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Aggregate Aggregate
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(3 rows) (3 rows)
-- Validate that we don't use a single-partition join method for a hash -- Validate that we don't use a single-partition join method for a hash
@ -144,11 +144,11 @@ EXPLAIN (COSTS OFF)
SELECT count(*) FROM orders, lineitem, customer_append SELECT count(*) FROM orders, lineitem, customer_append
WHERE o_custkey = l_partkey AND o_custkey = c_nationkey; WHERE o_custkey = l_partkey AND o_custkey = c_nationkey;
LOG: join order: [ "orders" ][ dual partition join "lineitem" ][ dual partition join "customer_append" ] LOG: join order: [ "orders" ][ dual partition join "lineitem" ][ dual partition join "customer_append" ]
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Aggregate Aggregate
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(3 rows) (3 rows)
-- Validate that we don't chose a single-partition join method with a -- Validate that we don't chose a single-partition join method with a
@ -157,11 +157,11 @@ EXPLAIN (COSTS OFF)
SELECT count(*) FROM orders, customer_hash SELECT count(*) FROM orders, customer_hash
WHERE c_custkey = o_custkey; WHERE c_custkey = o_custkey;
LOG: join order: [ "orders" ][ dual partition join "customer_hash" ] LOG: join order: [ "orders" ][ dual partition join "customer_hash" ]
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Aggregate Aggregate
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(3 rows) (3 rows)
-- Validate that we can re-partition a hash partitioned table to join with a -- Validate that we can re-partition a hash partitioned table to join with a
@ -170,11 +170,11 @@ EXPLAIN (COSTS OFF)
SELECT count(*) FROM orders_hash, customer_append SELECT count(*) FROM orders_hash, customer_append
WHERE c_custkey = o_custkey; WHERE c_custkey = o_custkey;
LOG: join order: [ "orders_hash" ][ dual partition join "customer_append" ] LOG: join order: [ "orders_hash" ][ dual partition join "customer_append" ]
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Aggregate Aggregate
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(3 rows) (3 rows)
-- Validate a 4 way join that could be done locally is planned as such by the logical -- Validate a 4 way join that could be done locally is planned as such by the logical
@ -195,11 +195,11 @@ JOIN (
WHERE event_type = 5 WHERE event_type = 5
) AS some_users ON (some_users.user_id = bar.user_id); ) AS some_users ON (some_users.user_id = bar.user_id);
LOG: join order: [ "users_table" ][ local partition join "events_table" ][ local partition join "users_table" ][ local partition join "events_table" ] LOG: join order: [ "users_table" ][ local partition join "events_table" ][ local partition join "users_table" ][ local partition join "events_table" ]
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Aggregate Aggregate
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(3 rows) (3 rows)
-- Reset client logging level to its previous value -- Reset client logging level to its previous value

18
src/test/regress/expected/multi_join_order_tpch_repartition.out
View File

@ -22,11 +22,11 @@ WHERE
and l_discount between 0.06 - 0.01 and 0.06 + 0.01 and l_discount between 0.06 - 0.01 and 0.06 + 0.01
and l_quantity < 24; and l_quantity < 24;
LOG: join order: [ "lineitem" ] LOG: join order: [ "lineitem" ]
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Aggregate Aggregate
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(3 rows) (3 rows)
-- Query #3 from the TPC-H decision support benchmark -- Query #3 from the TPC-H decision support benchmark
@ -61,7 +61,7 @@ LOG: join order: [ "orders" ][ local partition join "lineitem" ][ dual partitio
-> HashAggregate -> HashAggregate
Group Key: remote_scan.l_orderkey, remote_scan.o_orderdate, remote_scan.o_shippriority Group Key: remote_scan.l_orderkey, remote_scan.o_orderdate, remote_scan.o_shippriority
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(6 rows) (6 rows)
-- Query #10 from the TPC-H decision support benchmark -- Query #10 from the TPC-H decision support benchmark
@ -98,12 +98,12 @@ GROUP BY
ORDER BY ORDER BY
revenue DESC; revenue DESC;
LOG: join order: [ "orders" ][ local partition join "lineitem" ][ dual partition join "customer_append" ][ reference join "nation" ] LOG: join order: [ "orders" ][ local partition join "lineitem" ][ dual partition join "customer_append" ][ reference join "nation" ]
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Sort Sort
Sort Key: remote_scan.revenue DESC Sort Key: remote_scan.revenue DESC
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(4 rows) (4 rows)
-- Query #19 from the TPC-H decision support benchmark (modified) -- Query #19 from the TPC-H decision support benchmark (modified)
@ -138,11 +138,11 @@ WHERE
AND l_shipinstruct = 'DELIVER IN PERSON' AND l_shipinstruct = 'DELIVER IN PERSON'
); );
LOG: join order: [ "lineitem" ][ dual partition join "part_append" ] LOG: join order: [ "lineitem" ][ dual partition join "part_append" ]
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Aggregate Aggregate
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(3 rows) (3 rows)
-- Query to test multiple re-partition jobs in a single query -- Query to test multiple re-partition jobs in a single query
@ -158,12 +158,12 @@ WHERE
GROUP BY GROUP BY
l_partkey; l_partkey;
LOG: join order: [ "lineitem" ][ local partition join "orders" ][ dual partition join "part_append" ][ dual partition join "customer_append" ] LOG: join order: [ "lineitem" ][ local partition join "orders" ][ dual partition join "part_append" ][ dual partition join "customer_append" ]
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
HashAggregate HashAggregate
Group Key: remote_scan.l_partkey Group Key: remote_scan.l_partkey
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(4 rows) (4 rows)
-- Reset client logging level to its previous value -- Reset client logging level to its previous value

14
src/test/regress/expected/multi_join_order_tpch_small.out
View File

@ -17,11 +17,11 @@ WHERE
and l_discount between 0.06 - 0.01 and 0.06 + 0.01 and l_discount between 0.06 - 0.01 and 0.06 + 0.01
and l_quantity < 24; and l_quantity < 24;
LOG: join order: [ "lineitem" ] LOG: join order: [ "lineitem" ]
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Aggregate Aggregate
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(3 rows) (3 rows)
-- Query #3 from the TPC-H decision support benchmark -- Query #3 from the TPC-H decision support benchmark
@ -49,12 +49,12 @@ ORDER BY
revenue DESC, revenue DESC,
o_orderdate; o_orderdate;
LOG: join order: [ "orders" ][ reference join "customer" ][ local partition join "lineitem" ] LOG: join order: [ "orders" ][ reference join "customer" ][ local partition join "lineitem" ]
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Sort Sort
Sort Key: remote_scan.revenue DESC, remote_scan.o_orderdate Sort Key: remote_scan.revenue DESC, remote_scan.o_orderdate
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(4 rows) (4 rows)
-- Query #10 from the TPC-H decision support benchmark -- Query #10 from the TPC-H decision support benchmark
@ -98,7 +98,7 @@ LOG: join order: [ "orders" ][ reference join "customer" ][ reference join "nat
-> HashAggregate -> HashAggregate
Group Key: remote_scan.c_custkey, remote_scan.c_name, remote_scan.c_acctbal, remote_scan.c_phone, remote_scan.n_name, remote_scan.c_address, remote_scan.c_comment Group Key: remote_scan.c_custkey, remote_scan.c_name, remote_scan.c_acctbal, remote_scan.c_phone, remote_scan.n_name, remote_scan.c_address, remote_scan.c_comment
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(6 rows) (6 rows)
-- Query #19 from the TPC-H decision support benchmark (modified) -- Query #19 from the TPC-H decision support benchmark (modified)
@ -133,11 +133,11 @@ WHERE
AND l_shipinstruct = 'DELIVER IN PERSON' AND l_shipinstruct = 'DELIVER IN PERSON'
); );
LOG: join order: [ "lineitem" ][ reference join "part" ] LOG: join order: [ "lineitem" ][ reference join "part" ]
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Aggregate Aggregate
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(3 rows) (3 rows)
-- Reset client logging level to its previous value -- Reset client logging level to its previous value

14
src/test/regress/expected/multi_join_pruning.out
View File

@ -104,11 +104,11 @@ SELECT count(*)
DEBUG: Router planner cannot handle multi-shard select queries DEBUG: Router planner cannot handle multi-shard select queries
DEBUG: join prunable for intervals [{},{AZZXSP27F21T6,AZZXSP27F21T6}] and [{BA1000U2AMO4ZGX,BZZXSP27F21T6},{CA1000U2AMO4ZGX,CZZXSP27F21T6}] DEBUG: join prunable for intervals [{},{AZZXSP27F21T6,AZZXSP27F21T6}] and [{BA1000U2AMO4ZGX,BZZXSP27F21T6},{CA1000U2AMO4ZGX,CZZXSP27F21T6}]
DEBUG: join prunable for intervals [{BA1000U2AMO4ZGX,BZZXSP27F21T6},{CA1000U2AMO4ZGX,CZZXSP27F21T6}] and [{},{AZZXSP27F21T6,AZZXSP27F21T6}] DEBUG: join prunable for intervals [{BA1000U2AMO4ZGX,BZZXSP27F21T6},{CA1000U2AMO4ZGX,CZZXSP27F21T6}] and [{},{AZZXSP27F21T6,AZZXSP27F21T6}]
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Aggregate Aggregate
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(3 rows) (3 rows)
EXPLAIN (COSTS OFF) EXPLAIN (COSTS OFF)
@ -118,11 +118,11 @@ SELECT count(*)
DEBUG: Router planner cannot handle multi-shard select queries DEBUG: Router planner cannot handle multi-shard select queries
DEBUG: join prunable for intervals [(a,3,b),(b,4,c)] and [(c,5,d),(d,6,e)] DEBUG: join prunable for intervals [(a,3,b),(b,4,c)] and [(c,5,d),(d,6,e)]
DEBUG: join prunable for intervals [(c,5,d),(d,6,e)] and [(a,3,b),(b,4,c)] DEBUG: join prunable for intervals [(c,5,d),(d,6,e)] and [(a,3,b),(b,4,c)]
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Aggregate Aggregate
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(3 rows) (3 rows)
-- Test that large table joins on partition varchar columns work -- Test that large table joins on partition varchar columns work
@ -133,14 +133,14 @@ SELECT count(*)
DEBUG: Router planner cannot handle multi-shard select queries DEBUG: Router planner cannot handle multi-shard select queries
DEBUG: join prunable for intervals [AA1000U2AMO4ZGX,AZZXSP27F21T6] and [BA1000U2AMO4ZGX,BZZXSP27F21T6] DEBUG: join prunable for intervals [AA1000U2AMO4ZGX,AZZXSP27F21T6] and [BA1000U2AMO4ZGX,BZZXSP27F21T6]
DEBUG: join prunable for intervals [BA1000U2AMO4ZGX,BZZXSP27F21T6] and [AA1000U2AMO4ZGX,AZZXSP27F21T6] DEBUG: join prunable for intervals [BA1000U2AMO4ZGX,BZZXSP27F21T6] and [AA1000U2AMO4ZGX,AZZXSP27F21T6]
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Aggregate Aggregate
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(3 rows) (3 rows)
SET client_min_messages TO WARNING; SET client_min_messages TO WARNING;
DROP TABLE varchar_partitioned_table; DROP TABLE varchar_partitioned_table;
DROP TABLE array_partitioned_table; DROP TABLE array_partitioned_table;
DROP TABLE composite_partitioned_table; DROP TABLE composite_partitioned_table;

32
src/test/regress/expected/multi_task_assignment_policy.out
View File

@ -75,11 +75,11 @@ DEBUG: shard count after pruning for task_assignment_test_table: 3
DEBUG: assigned task to node localhost:xxxxx DEBUG: assigned task to node localhost:xxxxx
DEBUG: assigned task to node localhost:xxxxx DEBUG: assigned task to node localhost:xxxxx
DEBUG: assigned task to node localhost:xxxxx DEBUG: assigned task to node localhost:xxxxx
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Aggregate Aggregate
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(3 rows) (3 rows)
EXPLAIN (COSTS OFF) SELECT count(*) FROM task_assignment_test_table; EXPLAIN (COSTS OFF) SELECT count(*) FROM task_assignment_test_table;
@ -89,11 +89,11 @@ DEBUG: shard count after pruning for task_assignment_test_table: 3
DEBUG: assigned task to node localhost:xxxxx DEBUG: assigned task to node localhost:xxxxx
DEBUG: assigned task to node localhost:xxxxx DEBUG: assigned task to node localhost:xxxxx
DEBUG: assigned task to node localhost:xxxxx DEBUG: assigned task to node localhost:xxxxx
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Aggregate Aggregate
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(3 rows) (3 rows)
-- Next test the first-replica task assignment policy -- Next test the first-replica task assignment policy
@ -105,11 +105,11 @@ DEBUG: shard count after pruning for task_assignment_test_table: 3
DEBUG: assigned task to node localhost:xxxxx DEBUG: assigned task to node localhost:xxxxx
DEBUG: assigned task to node localhost:xxxxx DEBUG: assigned task to node localhost:xxxxx
DEBUG: assigned task to node localhost:xxxxx DEBUG: assigned task to node localhost:xxxxx
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Aggregate Aggregate
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(3 rows) (3 rows)
EXPLAIN (COSTS OFF) SELECT count(*) FROM task_assignment_test_table; EXPLAIN (COSTS OFF) SELECT count(*) FROM task_assignment_test_table;
@ -119,11 +119,11 @@ DEBUG: shard count after pruning for task_assignment_test_table: 3
DEBUG: assigned task to node localhost:xxxxx DEBUG: assigned task to node localhost:xxxxx
DEBUG: assigned task to node localhost:xxxxx DEBUG: assigned task to node localhost:xxxxx
DEBUG: assigned task to node localhost:xxxxx DEBUG: assigned task to node localhost:xxxxx
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Aggregate Aggregate
-> Custom Scan (Citus Adaptive) -> Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(3 rows) (3 rows)
COMMIT; COMMIT;
@ -142,38 +142,38 @@ SET LOCAL citus.task_assignment_policy TO 'greedy';
EXPLAIN (COSTS FALSE) SELECT * FROM task_assignment_reference_table; EXPLAIN (COSTS FALSE) SELECT * FROM task_assignment_reference_table;
DEBUG: Distributed planning for a fast-path router query DEBUG: Distributed planning for a fast-path router query
DEBUG: Creating router plan DEBUG: Creating router plan
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Custom Scan (Citus Adaptive) Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(2 rows) (2 rows)
EXPLAIN (COSTS FALSE) SELECT * FROM task_assignment_reference_table; EXPLAIN (COSTS FALSE) SELECT * FROM task_assignment_reference_table;
DEBUG: Distributed planning for a fast-path router query DEBUG: Distributed planning for a fast-path router query
DEBUG: Creating router plan DEBUG: Creating router plan
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Custom Scan (Citus Adaptive) Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(2 rows) (2 rows)
SET LOCAL citus.task_assignment_policy TO 'first-replica'; SET LOCAL citus.task_assignment_policy TO 'first-replica';
EXPLAIN (COSTS FALSE) SELECT * FROM task_assignment_reference_table; EXPLAIN (COSTS FALSE) SELECT * FROM task_assignment_reference_table;
DEBUG: Distributed planning for a fast-path router query DEBUG: Distributed planning for a fast-path router query
DEBUG: Creating router plan DEBUG: Creating router plan
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Custom Scan (Citus Adaptive) Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(2 rows) (2 rows)
EXPLAIN (COSTS FALSE) SELECT * FROM task_assignment_reference_table; EXPLAIN (COSTS FALSE) SELECT * FROM task_assignment_reference_table;
DEBUG: Distributed planning for a fast-path router query DEBUG: Distributed planning for a fast-path router query
DEBUG: Creating router plan DEBUG: Creating router plan
QUERY PLAN QUERY PLAN
--------------------------------------------------------------------- ---------------------------------------------------------------------
Custom Scan (Citus Adaptive) Custom Scan (Citus Adaptive)
explain statements for distributed queries are not enabled citus.explain_distributed_queries: false
(2 rows) (2 rows)
ROLLBACK; ROLLBACK;