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140 lines
3.5 KiB
Python
140 lines
3.5 KiB
Python
# This test is a subset of the 01223_dist_on_dist.
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# (just in case, with real separate instances).
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import pytest
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from helpers.cluster import ClickHouseCluster
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cluster = ClickHouseCluster(__file__)
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NODES = {
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"node"
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+ str(i): cluster.add_instance(
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"node" + str(i),
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main_configs=["configs/remote_servers.xml"],
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user_configs=["configs/set_distributed_defaults.xml"],
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)
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for i in (1, 2)
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}
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CREATE_TABLES_SQL = """
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CREATE TABLE
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base_table(
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node String,
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key Int32,
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value Int32
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)
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ENGINE = Memory;
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CREATE TABLE
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distributed_table
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AS base_table
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ENGINE = Distributed(test_cluster, default, base_table);
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CREATE TABLE
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distributed_over_distributed_table
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AS distributed_table
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ENGINE = Distributed('test_cluster', default, distributed_table);
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"""
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INSERT_SQL_TEMPLATE = "INSERT INTO base_table VALUES ('{node_id}', {key}, {value})"
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@pytest.fixture(scope="session")
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def started_cluster():
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try:
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cluster.start()
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for node_index, (node_name, node) in enumerate(NODES.items()):
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node.query(CREATE_TABLES_SQL)
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for i in range(0, 2):
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node.query(
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INSERT_SQL_TEMPLATE.format(
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node_id=node_name, key=i, value=i + (node_index * 10)
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)
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)
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yield cluster
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finally:
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cluster.shutdown()
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@pytest.mark.parametrize(
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"node,source",
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[
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pytest.param(
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NODES["node1"], "distributed_over_distributed_table", id="dod_node1"
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),
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pytest.param(
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NODES["node1"],
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"cluster('test_cluster', default, distributed_table)",
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id="cluster_node1",
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),
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pytest.param(
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NODES["node2"], "distributed_over_distributed_table", id="dod_node2"
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),
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pytest.param(
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NODES["node2"],
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"cluster('test_cluster', default, distributed_table)",
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id="cluster_node2",
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),
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],
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)
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class TestDistributedOverDistributedSuite:
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def test_select_with_order_by_node(self, started_cluster, node, source):
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assert (
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node.query(
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"SELECT * FROM {source} ORDER BY node, key".format(source=source)
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)
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== """node1 0 0
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node1 0 0
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node1 1 1
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node1 1 1
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node2 0 10
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node2 0 10
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node2 1 11
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node2 1 11
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"""
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)
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def test_select_with_order_by_key(self, started_cluster, node, source):
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assert (
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node.query(
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"SELECT * FROM {source} ORDER BY key, node".format(source=source)
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)
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== """node1 0 0
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node1 0 0
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node2 0 10
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node2 0 10
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node1 1 1
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node1 1 1
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node2 1 11
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node2 1 11
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"""
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)
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def test_select_with_group_by_node(self, started_cluster, node, source):
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assert (
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node.query(
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"SELECT node, SUM(value) FROM {source} GROUP BY node ORDER BY node".format(
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source=source
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)
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)
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== "node1 2\nnode2 42\n"
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)
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def test_select_with_group_by_key(self, started_cluster, node, source):
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assert (
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node.query(
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"SELECT key, SUM(value) FROM {source} GROUP BY key ORDER BY key".format(
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source=source
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)
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)
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== "0 20\n1 24\n"
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)
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def test_select_sum(self, started_cluster, node, source):
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assert (
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node.query("SELECT SUM(value) FROM {source}".format(source=source))
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== "44\n"
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)
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