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67 lines
2.4 KiB
Python
67 lines
2.4 KiB
Python
import time
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import pytest
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import subprocess
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from helpers.cluster import ClickHouseCluster
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from helpers.test_tools import assert_eq_with_retry
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cluster = ClickHouseCluster(__file__)
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node1 = cluster.add_instance('node1', main_configs=['configs/remote_servers.xml', 'configs/listen_host.xml'], with_zookeeper=True, ipv6_address='2001:3984:3989::1:1111')
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node2 = cluster.add_instance('node2', main_configs=['configs/remote_servers.xml', 'configs/listen_host.xml'], with_zookeeper=True, ipv6_address='2001:3984:3989::1:1112')
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@pytest.fixture(scope="module")
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def start_cluster():
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try:
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cluster.start()
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for node in [node1, node2]:
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node.query(
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'''
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CREATE DATABASE IF NOT EXISTS test;
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CREATE TABLE IF NOT EXISTS test_table(date Date, id UInt32)
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ENGINE = ReplicatedMergeTree('/clickhouse/tables/test/replicated', '{}')
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ORDER BY id PARTITION BY toYYYYMM(date);
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'''.format(node.name)
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)
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yield cluster
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except Exception as ex:
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print ex
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finally:
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cluster.shutdown()
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pass
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def test_merge_doesnt_work_without_zookeeper(start_cluster):
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# First we check, that normal replication works
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node1.query("INSERT INTO test_table VALUES ('2018-10-01', 1), ('2018-10-02', 2), ('2018-10-03', 3)")
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assert node1.query("SELECT count(*) from test_table") == "3\n"
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assert_eq_with_retry(node2, "SELECT count(*) from test_table", "3")
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# We change source node ip
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cluster.restart_instance_with_ip_change(node1, "2001:3984:3989::1:7777")
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# Put some data to source node1
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node1.query("INSERT INTO test_table VALUES ('2018-10-01', 5), ('2018-10-02', 6), ('2018-10-03', 7)")
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# Check that data is placed on node1
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assert node1.query("SELECT count(*) from test_table") == "6\n"
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# Because of DNS cache dest node2 cannot download data from node1
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with pytest.raises(Exception):
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assert_eq_with_retry(node2, "SELECT count(*) from test_table", "6")
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# drop DNS cache
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node2.query("SYSTEM DROP DNS CACHE")
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# Data is downloaded
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assert_eq_with_retry(node2, "SELECT count(*) from test_table", "6")
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# Just to be sure check one more time
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node1.query("INSERT INTO test_table VALUES ('2018-10-01', 8)")
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assert node1.query("SELECT count(*) from test_table") == "7\n"
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assert_eq_with_retry(node2, "SELECT count(*) from test_table", "7")
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