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50 lines
1.7 KiB
Python
50 lines
1.7 KiB
Python
import pytest
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from helpers.cluster import ClickHouseCluster
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import logging
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cluster = ClickHouseCluster(__file__)
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node = cluster.add_instance("node", main_configs=["configs/overrides.xml"])
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@pytest.fixture(scope="module")
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def start_cluster():
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try:
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logging.info("Starting cluster...")
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cluster.start()
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logging.info("Cluster started")
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yield cluster
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finally:
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cluster.shutdown()
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def test_distibuted_settings(start_cluster):
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node.query("")
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node.query(
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"""
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CREATE TABLE data_1 (key Int) ENGINE Memory();
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CREATE TABLE dist_1 as data_1 ENGINE Distributed(default, default, data_1) SETTINGS flush_on_detach = true;
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SYSTEM STOP DISTRIBUTED SENDS dist_1;
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INSERT INTO dist_1 SETTINGS prefer_localhost_replica=0 VALUES (1);
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DETACH TABLE dist_1;
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"""
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)
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assert "flush_on_detach = 1" in node.query("SHOW CREATE dist_1")
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# flush_on_detach=true, so data_1 should have 1 row
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assert int(node.query("SELECT count() FROM data_1")) == 1
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node.query(
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"""
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CREATE TABLE data_2 (key Int) ENGINE Memory();
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CREATE TABLE dist_2 as data_2 ENGINE Distributed(default, default, data_2);
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SYSTEM STOP DISTRIBUTED SENDS dist_2;
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INSERT INTO dist_2 SETTINGS prefer_localhost_replica=0 VALUES (2);
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DETACH TABLE dist_2;
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"""
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)
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## Settings are not added to CREATE (only specific one, like index_granularity for MergeTree)
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# assert "flush_on_detach = 0" in node.query("SHOW CREATE dist_2")
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# But settins are applied (flush_on_detach=false in config, so data_2 should not have any rows)
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assert int(node.query("SELECT count() FROM data_2")) == 0
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