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Added a test for ThreadPool #4572

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Alexey Milovidov 2019-03-04 22:29:23 +03:00
parent c3a2e73f32
commit f15762a96e
2 changed files with 17 additions and 0 deletions
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dbms/tests/queries/0_stateless/00913_many_threads.reference Normal file
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1500
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Ok.

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dbms/tests/queries/0_stateless/00913_many_threads.sql Normal file
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-- This test creates many threads to test a case when ThreadPool will remove some threads from pool after job is done.
SET max_block_size = 1, min_insert_block_size_rows = 0, min_insert_block_size_bytes = 0;
CREATE TEMPORARY TABLE t (x UInt64);
INSERT INTO t SELECT * FROM system.numbers LIMIT 1500;
SELECT DISTINCT blockSize() FROM t;
SET max_threads = 1500;
SELECT count() FROM t;
SELECT sum(sleep(0.1)) FROM t; -- All threads have time to be created.
SELECT 'Ok.';