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https://github.com/ClickHouse/ClickHouse.git
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146 lines
3.8 KiB
Python
146 lines
3.8 KiB
Python
#!/usr/bin/env python3
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import pytest
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from helpers.cluster import ClickHouseCluster
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import random
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import string
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import os
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import time
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from multiprocessing.dummy import Pool
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from helpers.test_tools import assert_eq_with_retry
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from kazoo.client import KazooClient, KazooState
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cluster = ClickHouseCluster(__file__)
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node1 = cluster.add_instance(
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"node1",
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main_configs=["configs/enable_keeper1.xml", "configs/keeper_conf.xml"],
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stay_alive=True,
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)
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node2 = cluster.add_instance(
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"node2",
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main_configs=["configs/enable_keeper2.xml", "configs/keeper_conf.xml"],
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stay_alive=True,
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)
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node3 = cluster.add_instance(
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"node3",
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main_configs=["configs/enable_keeper3.xml", "configs/keeper_conf.xml"],
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stay_alive=True,
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)
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def get_fake_zk(nodename, timeout=30.0):
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_fake_zk_instance = KazooClient(
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hosts=cluster.get_instance_ip(nodename) + ":9181", timeout=timeout
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)
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_fake_zk_instance.start()
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return _fake_zk_instance
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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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cluster.shutdown()
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def start(node):
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node.start_clickhouse()
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def delete_with_retry(node_name, path):
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for _ in range(30):
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try:
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get_fake_zk(node_name).delete(path)
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return
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except:
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time.sleep(0.5)
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raise Exception(f"Cannot delete {path} from node {node_name}")
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def test_start_offline(started_cluster):
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p = Pool(3)
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try:
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node1_zk = get_fake_zk("node1")
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node1_zk.create("/test_alive", b"aaaa")
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node1.stop_clickhouse()
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node2.stop_clickhouse()
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node3.stop_clickhouse()
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time.sleep(3)
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p.map(start, [node2, node3])
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assert node2.contains_in_log(
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"Cannot connect to ZooKeeper (or Keeper) before internal Keeper start"
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)
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assert node3.contains_in_log(
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"Cannot connect to ZooKeeper (or Keeper) before internal Keeper start"
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)
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node2_zk = get_fake_zk("node2")
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node2_zk.create("/c", b"data")
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finally:
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p.map(start, [node1, node2, node3])
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delete_with_retry("node1", "/test_alive")
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def test_start_non_existing(started_cluster):
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p = Pool(3)
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try:
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node1.stop_clickhouse()
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node2.stop_clickhouse()
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node3.stop_clickhouse()
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node1.replace_in_config(
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"/etc/clickhouse-server/config.d/enable_keeper1.xml",
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"node3",
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"non_existing_node",
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)
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node2.replace_in_config(
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"/etc/clickhouse-server/config.d/enable_keeper2.xml",
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"node3",
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"non_existing_node",
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)
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time.sleep(3)
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p.map(start, [node2, node1])
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assert node1.contains_in_log(
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"Cannot connect to ZooKeeper (or Keeper) before internal Keeper start"
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)
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assert node2.contains_in_log(
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"Cannot connect to ZooKeeper (or Keeper) before internal Keeper start"
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)
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node2_zk = get_fake_zk("node2")
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node2_zk.create("/test_non_exising", b"data")
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finally:
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node1.replace_in_config(
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"/etc/clickhouse-server/config.d/enable_keeper1.xml",
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"non_existing_node",
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"node3",
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)
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node2.replace_in_config(
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"/etc/clickhouse-server/config.d/enable_keeper2.xml",
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"non_existing_node",
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"node3",
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)
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p.map(start, [node1, node2, node3])
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delete_with_retry("node2", "/test_non_exising")
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def test_restart_third_node(started_cluster):
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node1_zk = get_fake_zk("node1")
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node1_zk.create("/test_restart", b"aaaa")
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node3.restart_clickhouse()
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assert node3.contains_in_log(
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"Connected to ZooKeeper (or Keeper) before internal Keeper start"
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)
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node1_zk.delete("/test_restart")
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