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77 lines
2.8 KiB
Python
77 lines
2.8 KiB
Python
import time
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import pytest
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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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def fill_nodes(nodes, shard):
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for node in nodes:
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node.query(
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'''
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CREATE TABLE test_table(date Date, id UInt32)
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ENGINE = ReplicatedMergeTree('/clickhouse/tables/test/replicated', '{replica}') ORDER BY id PARTITION BY toYYYYMM(date) SETTINGS min_replicated_logs_to_keep=3, max_replicated_logs_to_keep=5, cleanup_delay_period=0, cleanup_delay_period_random_add=0;
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'''.format(shard=shard, replica=node.name))
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cluster = ClickHouseCluster(__file__)
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node1 = cluster.add_instance('node1', with_zookeeper=True)
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node2 = cluster.add_instance('node2', with_zookeeper=True)
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node3 = cluster.add_instance('node3', with_zookeeper=True)
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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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fill_nodes([node1, node2, node3], 1)
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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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def test_recovery(start_cluster):
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node1.query("INSERT INTO test_table VALUES (1, 1)")
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time.sleep(1)
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node2.query("DETACH TABLE test_table")
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for i in range(100):
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node1.query("INSERT INTO test_table VALUES (1, {})".format(i))
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node2.query_with_retry("ATTACH TABLE test_table",
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check_callback=lambda x: len(node2.query("select * from test_table")) > 0)
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assert_eq_with_retry(node2, "SELECT count(*) FROM test_table", node1.query("SELECT count(*) FROM test_table"))
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lost_marker = "Will mark replica node2 as lost"
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assert node1.contains_in_log(lost_marker) or node3.contains_in_log(lost_marker)
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def test_choose_source_replica(start_cluster):
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node3.query("INSERT INTO test_table VALUES (2, 1)")
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time.sleep(1)
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node2.query("DETACH TABLE test_table")
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node1.query("SYSTEM STOP FETCHES test_table") # node1 will have many entries in queue, so node2 will clone node3
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for i in range(100):
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node3.query("INSERT INTO test_table VALUES (2, {})".format(i))
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node2.query_with_retry("ATTACH TABLE test_table",
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check_callback=lambda x: len(node2.query("select * from test_table")) > 0)
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node1.query("SYSTEM START FETCHES test_table")
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node1.query("SYSTEM SYNC REPLICA test_table")
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node2.query("SYSTEM SYNC REPLICA test_table")
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assert node1.query("SELECT count(*) FROM test_table") == node3.query("SELECT count(*) FROM test_table")
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assert node2.query("SELECT count(*) FROM test_table") == node3.query("SELECT count(*) FROM test_table")
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lost_marker = "Will mark replica node2 as lost"
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assert node1.contains_in_log(lost_marker) or node3.contains_in_log(lost_marker)
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assert node2.contains_in_log("Will mimic node3")
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