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https://github.com/ClickHouse/ClickHouse.git
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234 lines
7.4 KiB
Python
234 lines
7.4 KiB
Python
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.network import PartitionManager
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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/enable_keeper1.xml', 'configs/use_keeper.xml'], stay_alive=True)
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node2 = cluster.add_instance('node2', main_configs=['configs/enable_keeper2.xml', 'configs/use_keeper.xml'], stay_alive=True)
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node3 = cluster.add_instance('node3', main_configs=['configs/enable_keeper3.xml', 'configs/use_keeper.xml'], stay_alive=True)
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from kazoo.client import KazooClient, KazooState
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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 smaller_exception(ex):
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return '\n'.join(str(ex).split('\n')[0:2])
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def wait_node(node):
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for _ in range(100):
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zk = None
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try:
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node.query("SELECT * FROM system.zookeeper WHERE path = '/'")
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zk = get_fake_zk(node.name, timeout=30.0)
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zk.create("/test", sequence=True)
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print("node", node.name, "ready")
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break
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except Exception as ex:
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time.sleep(0.2)
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print("Waiting until", node.name, "will be ready, exception", ex)
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finally:
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if zk:
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zk.stop()
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zk.close()
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else:
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raise Exception("Can't wait node", node.name, "to become ready")
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def wait_nodes():
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for node in [node1, node2, node3]:
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wait_node(node)
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def get_fake_zk(nodename, timeout=30.0):
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_fake_zk_instance = KazooClient(hosts=cluster.get_instance_ip(nodename) + ":9181", timeout=timeout)
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_fake_zk_instance.start()
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return _fake_zk_instance
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def test_read_write_multinode(started_cluster):
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try:
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wait_nodes()
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node1_zk = get_fake_zk("node1")
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node2_zk = get_fake_zk("node2")
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node3_zk = get_fake_zk("node3")
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node1_zk.create("/test_read_write_multinode_node1", b"somedata1")
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node2_zk.create("/test_read_write_multinode_node2", b"somedata2")
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node3_zk.create("/test_read_write_multinode_node3", b"somedata3")
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# stale reads are allowed
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while node1_zk.exists("/test_read_write_multinode_node2") is None:
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time.sleep(0.1)
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while node1_zk.exists("/test_read_write_multinode_node3") is None:
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time.sleep(0.1)
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while node2_zk.exists("/test_read_write_multinode_node3") is None:
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time.sleep(0.1)
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assert node3_zk.get("/test_read_write_multinode_node1")[0] == b"somedata1"
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assert node2_zk.get("/test_read_write_multinode_node1")[0] == b"somedata1"
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assert node1_zk.get("/test_read_write_multinode_node1")[0] == b"somedata1"
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assert node3_zk.get("/test_read_write_multinode_node2")[0] == b"somedata2"
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assert node2_zk.get("/test_read_write_multinode_node2")[0] == b"somedata2"
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assert node1_zk.get("/test_read_write_multinode_node2")[0] == b"somedata2"
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assert node3_zk.get("/test_read_write_multinode_node3")[0] == b"somedata3"
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assert node2_zk.get("/test_read_write_multinode_node3")[0] == b"somedata3"
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assert node1_zk.get("/test_read_write_multinode_node3")[0] == b"somedata3"
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finally:
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try:
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for zk_conn in [node1_zk, node2_zk, node3_zk]:
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zk_conn.stop()
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zk_conn.close()
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except:
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pass
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def test_watch_on_follower(started_cluster):
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try:
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wait_nodes()
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node1_zk = get_fake_zk("node1")
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node2_zk = get_fake_zk("node2")
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node3_zk = get_fake_zk("node3")
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node1_zk.create("/test_data_watches")
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node2_zk.set("/test_data_watches", b"hello")
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node3_zk.set("/test_data_watches", b"world")
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node1_data = None
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def node1_callback(event):
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print("node1 data watch called")
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nonlocal node1_data
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node1_data = event
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node1_zk.get("/test_data_watches", watch=node1_callback)
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node2_data = None
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def node2_callback(event):
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print("node2 data watch called")
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nonlocal node2_data
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node2_data = event
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node2_zk.get("/test_data_watches", watch=node2_callback)
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node3_data = None
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def node3_callback(event):
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print("node3 data watch called")
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nonlocal node3_data
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node3_data = event
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node3_zk.get("/test_data_watches", watch=node3_callback)
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node1_zk.set("/test_data_watches", b"somevalue")
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time.sleep(3)
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print(node1_data)
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print(node2_data)
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print(node3_data)
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assert node1_data == node2_data
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assert node3_data == node2_data
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finally:
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try:
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for zk_conn in [node1_zk, node2_zk, node3_zk]:
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zk_conn.stop()
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zk_conn.close()
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except:
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pass
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def test_session_expiration(started_cluster):
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try:
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wait_nodes()
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node1_zk = get_fake_zk("node1")
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node2_zk = get_fake_zk("node2")
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node3_zk = get_fake_zk("node3", timeout=3.0)
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print("Node3 session id", node3_zk._session_id)
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node3_zk.create("/test_ephemeral_node", b"world", ephemeral=True)
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with PartitionManager() as pm:
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pm.partition_instances(node3, node2)
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pm.partition_instances(node3, node1)
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node3_zk.stop()
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node3_zk.close()
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for _ in range(100):
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if node1_zk.exists("/test_ephemeral_node") is None and node2_zk.exists("/test_ephemeral_node") is None:
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break
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print("Node1 exists", node1_zk.exists("/test_ephemeral_node"))
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print("Node2 exists", node2_zk.exists("/test_ephemeral_node"))
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time.sleep(0.1)
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node1_zk.sync("/")
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node2_zk.sync("/")
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assert node1_zk.exists("/test_ephemeral_node") is None
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assert node2_zk.exists("/test_ephemeral_node") is None
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finally:
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try:
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for zk_conn in [node1_zk, node2_zk, node3_zk]:
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try:
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zk_conn.stop()
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zk_conn.close()
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except:
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pass
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except:
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pass
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def test_follower_restart(started_cluster):
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try:
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wait_nodes()
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node1_zk = get_fake_zk("node1")
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node1_zk.create("/test_restart_node", b"hello")
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node3.restart_clickhouse(kill=True)
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node3_zk = get_fake_zk("node3")
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# got data from log
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assert node3_zk.get("/test_restart_node")[0] == b"hello"
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finally:
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try:
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for zk_conn in [node1_zk, node3_zk]:
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try:
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zk_conn.stop()
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zk_conn.close()
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except:
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pass
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except:
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pass
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def test_simple_replicated_table(started_cluster):
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wait_nodes()
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for i, node in enumerate([node1, node2, node3]):
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node.query("CREATE TABLE t (value UInt64) ENGINE = ReplicatedMergeTree('/clickhouse/t', '{}') ORDER BY tuple()".format(i + 1))
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node2.query("INSERT INTO t SELECT number FROM numbers(10)")
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node1.query("SYSTEM SYNC REPLICA t", timeout=10)
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node3.query("SYSTEM SYNC REPLICA t", timeout=10)
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assert_eq_with_retry(node1, "SELECT COUNT() FROM t", "10")
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assert_eq_with_retry(node2, "SELECT COUNT() FROM t", "10")
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assert_eq_with_retry(node3, "SELECT COUNT() FROM t", "10")
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