mirror of https://github.com/citusdata/citus.git
56 lines
1.6 KiB
Plaintext
56 lines
1.6 KiB
Plaintext
CREATE SCHEMA adaptive_executor;
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SET search_path TO adaptive_executor;
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CREATE TABLE test (x int, y int);
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SET citus.shard_count TO 4;
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SET citus.shard_replication_factor TO 1;
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SET citus.next_shard_id TO 801009000;
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SELECT create_distributed_table('test','x');
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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INSERT INTO test VALUES (1,2);
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INSERT INTO test VALUES (3,2);
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-- Set a very high slow start to avoid opening parallel connections
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SET citus.executor_slow_start_interval TO '60s';
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SET citus.max_adaptive_executor_pool_size TO 2;
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BEGIN;
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SELECT count(*) FROM test a JOIN (SELECT x, pg_sleep(0.1) FROM test) b USING (x);
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count
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---------------------------------------------------------------------
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2
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(1 row)
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SELECT sum(result::bigint) FROM run_command_on_workers($$
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SELECT count(*) FROM pg_stat_activity
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WHERE pid <> pg_backend_pid() AND query LIKE '%8010090%'
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$$);
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sum
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---------------------------------------------------------------------
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2
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(1 row)
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END;
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-- SELECT takes longer than slow start interval, should open multiple connections
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SET citus.executor_slow_start_interval TO '10ms';
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BEGIN;
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SELECT count(*) FROM test a JOIN (SELECT x, pg_sleep(0.1) FROM test) b USING (x);
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count
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---------------------------------------------------------------------
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2
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(1 row)
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SELECT sum(result::bigint) FROM run_command_on_workers($$
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SELECT count(*) FROM pg_stat_activity
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WHERE pid <> pg_backend_pid() AND query LIKE '%8010090%'
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$$);
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sum
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---------------------------------------------------------------------
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4
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(1 row)
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END;
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DROP SCHEMA adaptive_executor CASCADE;
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NOTICE: drop cascades to table test
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