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99 lines
2.8 KiB
Python
99 lines
2.8 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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from __future__ import print_function
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import itertools
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import timeit
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import logging
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import pytest
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from helpers.cluster import ClickHouseCluster
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from helpers.network import PartitionManager
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from helpers.test_tools import TSV
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cluster = ClickHouseCluster(__file__)
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NODES = {'node' + 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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) for i in (1, 2)}
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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(INSERT_SQL_TEMPLATE.format(node_id=node_name, key=i, value=i + (node_index * 10)))
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yield cluster
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finally:
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cluster.shutdown()
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@pytest.mark.parametrize("node", NODES.values())
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@pytest.mark.parametrize("source", ["distributed_over_distributed_table", "cluster('test_cluster', default, distributed_table)"])
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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 node.query("SELECT * FROM {source} ORDER BY node, key".format(source=source)) \
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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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def test_select_with_order_by_key(self, started_cluster, node, source):
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assert node.query("SELECT * FROM {source} ORDER BY key, node".format(source=source)) \
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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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def test_select_with_group_by_node(self, started_cluster, node, source):
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assert node.query("SELECT node, SUM(value) FROM {source} GROUP BY node ORDER BY node".format(source=source)) \
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== "node1 2\nnode2 42\n"
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def test_select_with_group_by_key(self, started_cluster, node, source):
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assert node.query("SELECT key, SUM(value) FROM {source} GROUP BY key ORDER BY key".format(source=source)) \
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== "0 20\n1 24\n"
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def test_select_sum(self, started_cluster, node, source):
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assert node.query("SELECT SUM(value) FROM {source}".format(source=source)) \
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== "44\n"
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