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https://github.com/ClickHouse/ClickHouse.git
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131 lines
3.5 KiB
Python
131 lines
3.5 KiB
Python
#!/usr/bin/env python3
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import pytest
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from helpers.cluster import ClickHouseCluster, ClickHouseInstance
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import helpers.keeper_utils as ku
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import os
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import typing as tp
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cluster = ClickHouseCluster(__file__)
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CONFIG_DIR = os.path.join(os.path.dirname(os.path.realpath(__file__)), "configs")
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nodes = [
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cluster.add_instance(f"node{i}", main_configs=[f"configs/keeper{i}.xml"])
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for i in range(1, 6)
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]
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node1, node2, node3, node4, node5 = nodes
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log_msg_removed = "has been removed from the cluster"
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zk1, zk2, zk3, zk4, zk5 = None, None, None, None, None
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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.start()
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yield cluster
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finally:
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conn: tp.Optional[ku.KeeperClient]
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for conn in [zk1, zk2, zk3, zk4, zk5]:
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if conn:
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conn.stop()
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cluster.shutdown()
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def create_client(node: ClickHouseInstance):
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return ku.KeeperClient(
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cluster.server_bin_path, cluster.get_instance_ip(node.name), 9181
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)
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def test_reconfig_remove_2_and_leader(started_cluster):
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"""
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Remove 2 followers from a cluster of 5. Remove leader from 3 nodes.
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"""
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global zk1, zk2, zk3, zk4, zk5
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zk1 = create_client(node1)
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config = ku.get_config_str(zk1)
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print("Initial config", config)
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assert len(config.split("\n")) == 5
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for i in range(100):
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zk1.create(f"/test_two_{i}", "somedata")
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zk4 = create_client(node4)
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zk4.sync("/test_two_0")
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ku.wait_configs_equal(config, zk4)
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zk5 = create_client(node5)
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zk5.sync("/test_two_0")
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ku.wait_configs_equal(config, zk5)
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for i in range(100):
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assert zk4.exists(f"test_two_{i}")
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assert zk5.exists(f"test_two_{i}")
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zk4.create(f"/test_two_{100 + i}", "otherdata")
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zk2 = create_client(node2)
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config = zk2.reconfig(joining=None, leaving="4,5", new_members=None)
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print("After removing 4,5", config)
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assert len(config.split("\n")) == 3
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assert "node1" in config
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assert "node2" in config
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assert "node3" in config
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assert "node4" not in config
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assert "node5" not in config
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zk1.stop()
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zk1 = create_client(node1)
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zk1.sync("/test_two_0")
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ku.wait_configs_equal(config, zk1)
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for i in range(200):
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assert zk1.exists(f"test_two_{i}")
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assert zk2.exists(f"test_two_{i}")
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assert not node1.contains_in_log(log_msg_removed)
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assert not node2.contains_in_log(log_msg_removed)
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assert not node3.contains_in_log(log_msg_removed)
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assert node4.contains_in_log(log_msg_removed)
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assert node5.contains_in_log(log_msg_removed)
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assert ku.is_leader(cluster, node1)
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for i in range(100):
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zk1.create(f"/test_leader_{i}", "somedata")
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# when a leader gets a remove request, it must yield leadership
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config = zk1.reconfig(joining=None, leaving="1", new_members=None)
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print("After removing 1 (leader)", config)
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assert len(config.split("\n")) == 2
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assert "node1" not in config
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assert "node2" in config
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assert "node3" in config
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assert "node4" not in config
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assert "node5" not in config
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zk2.stop()
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zk2 = create_client(node2)
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zk2.sync("/test_leader_0")
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ku.wait_configs_equal(config, zk2)
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zk3 = create_client(node3)
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zk3.sync("/test_leader_0")
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ku.wait_configs_equal(config, zk3)
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for i in range(100):
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assert zk2.exists(f"test_leader_{i}")
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assert zk3.exists(f"test_leader_{i}")
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assert node1.contains_in_log(log_msg_removed)
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assert not node2.contains_in_log(log_msg_removed)
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assert not node3.contains_in_log(log_msg_removed)
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