mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-07 08:03:15 +00:00
464 lines
18 KiB
Python
464 lines
18 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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cluster = ClickHouseCluster(__file__)
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node1 = cluster.add_instance('node1', main_configs=['configs/enable_test_keeper1.xml', 'configs/log_conf.xml', 'configs/use_test_keeper.xml'], stay_alive=True)
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node2 = cluster.add_instance('node2', main_configs=['configs/enable_test_keeper2.xml', 'configs/log_conf.xml', 'configs/use_test_keeper.xml'], stay_alive=True)
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node3 = cluster.add_instance('node3', main_configs=['configs/enable_test_keeper3.xml', 'configs/log_conf.xml', 'configs/use_test_keeper.xml'], stay_alive=True)
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from kazoo.client import KazooClient
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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 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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def reset_last_zxid_listener(state):
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print("Fake zk callback called for state", state)
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_fake_zk_instance.last_zxid = 0
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_fake_zk_instance.add_listener(reset_last_zxid_listener)
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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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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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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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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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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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time.sleep(0.1)
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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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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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# something may be wrong after partition in other tests
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# so create with retry
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for i, node in enumerate([node1, node2, node3]):
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for i in range(100):
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try:
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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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break
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except:
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time.sleep(0.1)
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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 node1.query("SELECT COUNT() FROM t") == "10\n"
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assert node2.query("SELECT COUNT() FROM t") == "10\n"
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assert node3.query("SELECT COUNT() FROM t") == "10\n"
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# in extremely rare case it can take more than 5 minutes in debug build with sanitizer
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@pytest.mark.timeout(600)
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def test_blocade_leader(started_cluster):
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for i, node in enumerate([node1, node2, node3]):
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node.query("CREATE TABLE t1 (value UInt64) ENGINE = ReplicatedMergeTree('/clickhouse/t1', '{}') ORDER BY tuple()".format(i + 1))
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node2.query("INSERT INTO t1 SELECT number FROM numbers(10)")
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node1.query("SYSTEM SYNC REPLICA t1", timeout=10)
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node3.query("SYSTEM SYNC REPLICA t1", timeout=10)
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assert node1.query("SELECT COUNT() FROM t1") == "10\n"
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assert node2.query("SELECT COUNT() FROM t1") == "10\n"
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assert node3.query("SELECT COUNT() FROM t1") == "10\n"
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with PartitionManager() as pm:
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pm.partition_instances(node2, node1)
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pm.partition_instances(node3, node1)
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for i in range(100):
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try:
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node2.query("SYSTEM RESTART REPLICA t1")
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node2.query("INSERT INTO t1 SELECT rand() FROM numbers(100)")
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break
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except Exception as ex:
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try:
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node2.query("ATTACH TABLE t1")
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except Exception as attach_ex:
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print("Got exception node2", smaller_exception(attach_ex))
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print("Got exception node2", smaller_exception(ex))
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time.sleep(0.5)
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else:
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for num, node in enumerate([node1, node2, node3]):
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dump_zk(node, '/clickhouse/t1', '/clickhouse/t1/replicas/{}'.format(num + 1))
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assert False, "Cannot insert anything node2"
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for i in range(100):
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try:
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node3.query("SYSTEM RESTART REPLICA t1")
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node3.query("INSERT INTO t1 SELECT rand() FROM numbers(100)")
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break
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except Exception as ex:
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try:
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node3.query("ATTACH TABLE t1")
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except Exception as attach_ex:
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print("Got exception node3", smaller_exception(attach_ex))
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print("Got exception node3", smaller_exception(ex))
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time.sleep(0.5)
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else:
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for num, node in enumerate([node1, node2, node3]):
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dump_zk(node, '/clickhouse/t1', '/clickhouse/t1/replicas/{}'.format(num + 1))
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assert False, "Cannot insert anything node3"
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for n, node in enumerate([node1, node2, node3]):
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for i in range(100):
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try:
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node.query("SYSTEM RESTART REPLICA t1")
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break
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except Exception as ex:
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try:
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node.query("ATTACH TABLE t1")
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except Exception as attach_ex:
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print("Got exception node{}".format(n + 1), smaller_exception(attach_ex))
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print("Got exception node{}".format(n + 1), smaller_exception(ex))
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time.sleep(0.5)
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else:
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assert False, "Cannot reconnect for node{}".format(n + 1)
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for i in range(100):
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try:
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node1.query("INSERT INTO t1 SELECT rand() FROM numbers(100)")
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break
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except Exception as ex:
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print("Got exception node1", smaller_exception(ex))
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time.sleep(0.5)
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else:
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for num, node in enumerate([node1, node2, node3]):
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dump_zk(node, '/clickhouse/t1', '/clickhouse/t1/replicas/{}'.format(num + 1))
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assert False, "Cannot insert anything node1"
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for n, node in enumerate([node1, node2, node3]):
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for i in range(100):
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try:
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node.query("SYSTEM RESTART REPLICA t1")
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node.query("SYSTEM SYNC REPLICA t1", timeout=10)
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break
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except Exception as ex:
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try:
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node.query("ATTACH TABLE t1")
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except Exception as attach_ex:
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print("Got exception node{}".format(n + 1), smaller_exception(attach_ex))
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print("Got exception node{}".format(n + 1), smaller_exception(ex))
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time.sleep(0.5)
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else:
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for num, node in enumerate([node1, node2, node3]):
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dump_zk(node, '/clickhouse/t1', '/clickhouse/t1/replicas/{}'.format(num + 1))
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assert False, "Cannot sync replica node{}".format(n+1)
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if node1.query("SELECT COUNT() FROM t1") != "310\n":
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for num, node in enumerate([node1, node2, node3]):
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dump_zk(node, '/clickhouse/t1', '/clickhouse/t1/replicas/{}'.format(num + 1))
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assert node1.query("SELECT COUNT() FROM t1") == "310\n"
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assert node2.query("SELECT COUNT() FROM t1") == "310\n"
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assert node3.query("SELECT COUNT() FROM t1") == "310\n"
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def dump_zk(node, zk_path, replica_path):
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print(node.query("SELECT * FROM system.replication_queue FORMAT Vertical"))
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print("Replicas")
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print(node.query("SELECT * FROM system.replicas FORMAT Vertical"))
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print("Replica 2 info")
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print(node.query("SELECT * FROM system.zookeeper WHERE path = '{}' FORMAT Vertical".format(zk_path)))
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print("Queue")
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print(node.query("SELECT * FROM system.zookeeper WHERE path = '{}/queue' FORMAT Vertical".format(replica_path)))
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print("Log")
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print(node.query("SELECT * FROM system.zookeeper WHERE path = '{}/log' FORMAT Vertical".format(zk_path)))
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print("Parts")
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print(node.query("SELECT name FROM system.zookeeper WHERE path = '{}/parts' FORMAT Vertical".format(replica_path)))
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# in extremely rare case it can take more than 5 minutes in debug build with sanitizer
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@pytest.mark.timeout(600)
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def test_blocade_leader_twice(started_cluster):
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for i, node in enumerate([node1, node2, node3]):
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node.query("CREATE TABLE t2 (value UInt64) ENGINE = ReplicatedMergeTree('/clickhouse/t2', '{}') ORDER BY tuple()".format(i + 1))
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node2.query("INSERT INTO t2 SELECT number FROM numbers(10)")
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node1.query("SYSTEM SYNC REPLICA t2", timeout=10)
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node3.query("SYSTEM SYNC REPLICA t2", timeout=10)
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assert node1.query("SELECT COUNT() FROM t2") == "10\n"
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assert node2.query("SELECT COUNT() FROM t2") == "10\n"
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assert node3.query("SELECT COUNT() FROM t2") == "10\n"
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with PartitionManager() as pm:
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pm.partition_instances(node2, node1)
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pm.partition_instances(node3, node1)
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for i in range(100):
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try:
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node2.query("SYSTEM RESTART REPLICA t2")
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node2.query("INSERT INTO t2 SELECT rand() FROM numbers(100)")
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break
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except Exception as ex:
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try:
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node2.query("ATTACH TABLE t2")
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except Exception as attach_ex:
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print("Got exception node2", smaller_exception(attach_ex))
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print("Got exception node2", smaller_exception(ex))
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time.sleep(0.5)
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else:
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for num, node in enumerate([node1, node2, node3]):
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dump_zk(node, '/clickhouse/t2', '/clickhouse/t2/replicas/{}'.format(num + 1))
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assert False, "Cannot reconnect for node2"
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for i in range(100):
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try:
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node3.query("SYSTEM RESTART REPLICA t2")
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node3.query("INSERT INTO t2 SELECT rand() FROM numbers(100)")
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break
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except Exception as ex:
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try:
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node3.query("ATTACH TABLE t2")
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except Exception as attach_ex:
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print("Got exception node3", smaller_exception(attach_ex))
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print("Got exception node3", smaller_exception(ex))
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time.sleep(0.5)
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else:
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for num, node in enumerate([node1, node2, node3]):
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dump_zk(node, '/clickhouse/t2', '/clickhouse/t2/replicas/{}'.format(num + 1))
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assert False, "Cannot reconnect for node3"
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# Total network partition
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pm.partition_instances(node3, node2)
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for i in range(10):
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try:
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node3.query("INSERT INTO t2 SELECT rand() FROM numbers(100)")
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assert False, "Node3 became leader?"
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except Exception as ex:
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time.sleep(0.5)
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for i in range(10):
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try:
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node2.query("INSERT INTO t2 SELECT rand() FROM numbers(100)")
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assert False, "Node2 became leader?"
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except Exception as ex:
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time.sleep(0.5)
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for n, node in enumerate([node1, node2, node3]):
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for i in range(100):
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try:
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node.query("SYSTEM RESTART REPLICA t2")
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break
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except Exception as ex:
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try:
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node.query("ATTACH TABLE t2")
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except Exception as attach_ex:
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print("Got exception node{}".format(n + 1), smaller_exception(attach_ex))
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print("Got exception node{}".format(n + 1), smaller_exception(ex))
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time.sleep(0.5)
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else:
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for num, node in enumerate([node1, node2, node3]):
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dump_zk(node, '/clickhouse/t2', '/clickhouse/t2/replicas/{}'.format(num + 1))
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assert False, "Cannot reconnect for node{}".format(n + 1)
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for n, node in enumerate([node1, node2, node3]):
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for i in range(100):
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try:
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node.query("INSERT INTO t2 SELECT rand() FROM numbers(100)")
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break
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except Exception as ex:
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print("Got exception node{}".format(n + 1), smaller_exception(ex))
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time.sleep(0.5)
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else:
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for num, node in enumerate([node1, node2, node3]):
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dump_zk(node, '/clickhouse/t2', '/clickhouse/t2/replicas/{}'.format(num + 1))
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assert False, "Cannot reconnect for node{}".format(n + 1)
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for n, node in enumerate([node1, node2, node3]):
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for i in range(100):
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try:
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node.query("SYSTEM RESTART REPLICA t2")
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node.query("SYSTEM SYNC REPLICA t2", timeout=10)
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break
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except Exception as ex:
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try:
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node.query("ATTACH TABLE t2")
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except Exception as attach_ex:
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print("Got exception node{}".format(n + 1), smaller_exception(attach_ex))
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print("Got exception node{}".format(n + 1), smaller_exception(ex))
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time.sleep(0.5)
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else:
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for num, node in enumerate([node1, node2, node3]):
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dump_zk(node, '/clickhouse/t2', '/clickhouse/t2/replicas/{}'.format(num + 1))
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assert False, "Cannot reconnect for node{}".format(n + 1)
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assert node1.query("SELECT COUNT() FROM t2") == "510\n"
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if node2.query("SELECT COUNT() FROM t2") != "510\n":
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for num, node in enumerate([node1, node2, node3]):
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dump_zk(node, '/clickhouse/t2', '/clickhouse/t2/replicas/{}'.format(num + 1))
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assert node2.query("SELECT COUNT() FROM t2") == "510\n"
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assert node3.query("SELECT COUNT() FROM t2") == "510\n"
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