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53 lines
1.6 KiB
Python
53 lines
1.6 KiB
Python
"""
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This test is similar to test_cross_replication, except
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in this test we write into per-node tables and read from the distributed table.
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The default database in the distributed table definition is left empty on purpose to test
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default database deduction.
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"""
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import pytest
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from helpers.client import QueryRuntimeException
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from helpers.cluster import ClickHouseCluster
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from helpers.test_tools import TSV
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from contextlib import contextmanager
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def bootstrap(cluster):
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for i, node in enumerate(list(cluster.instances.values())):
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node.query(f"CREATE DATABASE IF NOT EXISTS r{i}")
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node.query(f"CREATE TABLE r{i}.test_data(v UInt64) ENGINE = Memory()")
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node.query(f"INSERT INTO r{i}.test_data SELECT * FROM numbers(10)")
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node.query(
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f"""CREATE TABLE default.test AS r{i}.test_data ENGINE = Distributed(secure, '', test_data, rand())"""
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)
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@contextmanager
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def start_cluster():
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cluster_disabled = ClickHouseCluster(__file__)
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cluster_disabled.add_instance(
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"node1",
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main_configs=["configs/remote_servers.xml"],
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user_configs=["configs/users.xml"],
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)
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cluster_disabled.add_instance(
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"node2",
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main_configs=["configs/remote_servers.xml"],
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user_configs=["configs/users.xml"],
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)
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try:
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cluster_disabled.start()
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bootstrap(cluster_disabled)
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yield cluster_disabled
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finally:
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cluster_disabled.shutdown()
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def test_query():
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with start_cluster() as cluster:
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node1 = cluster.instances["node1"]
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assert TSV(node1.query("SELECT count() FROM default.test")) == TSV("20")
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