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Fix a flaky behaviour in shared_connection_stats (#4596) 

With the previous query, we were not pushing down the pg_sleep hence the
number of connections to a worker could be different from run to run.
pull/4591/head^2
SaitTalhaNisanci 2021-01-28 18:42:49 +03:00 committed by GitHub
parent 34ccae8478
commit 1ba399f5ca
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2 changed files with 4 additions and 4 deletions
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6
src/test/regress/expected/shared_connection_stats.out
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@ -227,10 +227,10 @@ COMMIT;
-- and only 5 connections are used per node -- and only 5 connections are used per node
BEGIN; BEGIN;
SET LOCAL citus.max_adaptive_executor_pool_size TO 16; SET LOCAL citus.max_adaptive_executor_pool_size TO 16;
SELECT count(*), pg_sleep(0.1) FROM test; with cte_1 as (select pg_sleep(0.1) is null, a from test) SELECT a from cte_1 ORDER By 1 LIMIT 1;
count | pg_sleep a
--------------------------------------------------------------------- ---------------------------------------------------------------------
101 | 0
(1 row) (1 row)
SELECT SELECT

2
src/test/regress/sql/shared_connection_stats.sql
View File

@ -149,7 +149,7 @@ COMMIT;
-- and only 5 connections are used per node -- and only 5 connections are used per node
BEGIN; BEGIN;
SET LOCAL citus.max_adaptive_executor_pool_size TO 16; SET LOCAL citus.max_adaptive_executor_pool_size TO 16;
SELECT count(*), pg_sleep(0.1) FROM test; with cte_1 as (select pg_sleep(0.1) is null, a from test) SELECT a from cte_1 ORDER By 1 LIMIT 1;
SELECT SELECT
connection_count_to_node connection_count_to_node
FROM FROM