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70 lines
1.9 KiB
Python
70 lines
1.9 KiB
Python
import pytest
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from helpers.cluster import ClickHouseCluster
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cluster = ClickHouseCluster(__file__)
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node1 = cluster.add_instance(
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"node1",
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with_zookeeper=True,
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image="yandex/clickhouse-server",
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tag="21.3",
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with_installed_binary=True,
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)
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node2 = cluster.add_instance("node2", with_zookeeper=True)
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node3 = cluster.add_instance("node3", with_zookeeper=True)
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@pytest.fixture(scope="module")
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def start_cluster():
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try:
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cluster.start()
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yield cluster
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finally:
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cluster.shutdown()
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def test_two_level_merge(start_cluster):
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for node in start_cluster.instances.values():
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node.query(
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"""
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CREATE TABLE IF NOT EXISTS test_two_level_merge(date Date, zone UInt32, number UInt32)
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ENGINE = MergeTree() PARTITION BY toUInt64(number / 1000) ORDER BY tuple();
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INSERT INTO
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test_two_level_merge
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SELECT
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toDate('2021-09-28') - number / 1000,
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249081628,
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number
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FROM
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numbers(15000);
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"""
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)
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# covers only the keys64 method
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for node in start_cluster.instances.values():
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print(
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node.query(
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"""
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SELECT
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throwIf(uniqExact(date) != count(), 'group by is borked')
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FROM (
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SELECT
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date
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FROM
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remote('node{1,2}', default.test_two_level_merge)
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WHERE
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date BETWEEN toDate('2021-09-20') AND toDate('2021-09-28')
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AND zone = 249081628
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GROUP by date, zone
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)
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SETTINGS
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group_by_two_level_threshold = 1,
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group_by_two_level_threshold_bytes = 1,
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max_threads = 2,
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prefer_localhost_replica = 0
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"""
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)
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)
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