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https://github.com/ClickHouse/ClickHouse.git
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126 lines
3.9 KiB
Python
126 lines
3.9 KiB
Python
import logging
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import csv
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import time
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import pytest
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from helpers.cluster import ClickHouseCluster
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from helpers.test_tools import TSV
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logging.getLogger().setLevel(logging.INFO)
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logging.getLogger().addHandler(logging.StreamHandler())
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@pytest.fixture(scope="module")
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def started_cluster():
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try:
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cluster = ClickHouseCluster(__file__)
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cluster.add_instance(
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"s0_0_0",
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main_configs=["configs/cluster.xml"],
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user_configs=["configs/users.xml"],
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macros={"replica": "node1", "shard": "shard1"},
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with_zookeeper=True,
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)
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cluster.add_instance(
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"s0_0_1",
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main_configs=["configs/cluster.xml"],
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user_configs=["configs/users.xml"],
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macros={"replica": "replica2", "shard": "shard1"},
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with_zookeeper=True,
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)
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cluster.add_instance(
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"s0_1_0",
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main_configs=["configs/cluster.xml"],
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user_configs=["configs/users.xml"],
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macros={"replica": "replica1", "shard": "shard2"},
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with_zookeeper=True,
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)
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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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for node_name in ("s0_0_0", "s0_0_1", "s0_1_0"):
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for i in range(1, 3):
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cluster.instances[node_name].query(
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f"""
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INSERT INTO TABLE FUNCTION file(
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'file{i}.csv', 'CSV', 's String, i UInt32') VALUES ('file{i}',{i})
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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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def get_query(select: str, cluster: bool, files_nums: str, order_by="ORDER BY (i, s)"):
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if cluster:
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return f"SELECT {select} from fileCluster('my_cluster', 'file{{{files_nums}}}.csv', 'CSV', 's String, i UInt32') {order_by}"
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else:
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return f"SELECT {select} from file('file{{{files_nums}}}.csv', 'CSV', 's String, i UInt32') {order_by}"
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def test_select_all(started_cluster):
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node = started_cluster.instances["s0_0_0"]
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local = node.query(get_query("*", False, "1,2"))
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distributed = node.query(get_query("*", True, "1,2"))
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assert TSV(local) == TSV(distributed)
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def test_count(started_cluster):
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node = started_cluster.instances["s0_0_0"]
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local = node.query(get_query("count(*)", False, "1,2", ""))
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distributed = node.query(get_query("count(*)", True, "1,2", ""))
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assert TSV(local) == TSV(distributed)
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def test_non_existent_cluster(started_cluster):
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node = started_cluster.instances["s0_0_0"]
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error = node.query_and_get_error(
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"""
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SELECT count(*) from fileCluster(
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'non_existent_cluster', 'file{1,2}.csv', 'CSV', 's String, i UInt32')
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UNION ALL
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SELECT count(*) from fileCluster(
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'non_existent_cluster', 'file{1,2}.csv', 'CSV', 's String, i UInt32')
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"""
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)
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assert "not found" in error
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def test_missing_file(started_cluster):
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"""
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Select from a list of files, _some_ of them don't exist
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"""
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node = started_cluster.instances["s0_0_0"]
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local_with_missing_file = node.query(get_query("*", False, "1,2,3"))
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local_wo_missing_file = node.query(get_query("*", False, "1,2"))
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distributed_with_missing_file = node.query(get_query("*", True, "1,2,3"))
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distributed_wo_missing_file = node.query(get_query("*", True, "1,2"))
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assert TSV(local_with_missing_file) == TSV(distributed_with_missing_file)
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assert TSV(local_wo_missing_file) == TSV(distributed_wo_missing_file)
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assert TSV(local_with_missing_file) == TSV(distributed_wo_missing_file)
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assert TSV(local_wo_missing_file) == TSV(distributed_with_missing_file)
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def test_no_such_files(started_cluster):
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"""
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Select from a list of files, _none_ of them don't exist
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"""
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node = started_cluster.instances["s0_0_0"]
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local = node.query(get_query("*", False, "3,4"))
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distributed = node.query(get_query("*", True, "3,4"))
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assert TSV(local) == TSV(distributed)
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