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500 lines
20 KiB
Python
500 lines
20 KiB
Python
import pytest
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import random
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import threading
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import time
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from helpers.client import QueryRuntimeException
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from helpers.cluster import ClickHouseCluster
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from helpers.test_tools import TSV
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transient_ch_errors = [23, 32, 210]
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cluster = ClickHouseCluster(__file__)
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s0r0 = cluster.add_instance(
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's0r0',
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main_configs=['configs/remote_servers.xml', 'configs/merge_tree.xml'],
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stay_alive=True,
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with_zookeeper=True)
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s0r1 = cluster.add_instance(
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's0r1',
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main_configs=['configs/remote_servers.xml', 'configs/merge_tree.xml'],
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stay_alive=True,
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with_zookeeper=True)
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s1r0 = cluster.add_instance(
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's1r0',
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main_configs=['configs/remote_servers.xml', 'configs/merge_tree.xml'],
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stay_alive=True,
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with_zookeeper=True)
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s1r1 = cluster.add_instance(
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's1r1',
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main_configs=['configs/remote_servers.xml', 'configs/merge_tree.xml'],
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stay_alive=True,
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with_zookeeper=True)
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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 test_move(started_cluster):
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for shard_ix, rs in enumerate([[s0r0, s0r1], [s1r0, s1r1]]):
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for replica_ix, r in enumerate(rs):
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r.query("""
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DROP TABLE IF EXISTS test_move;
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CREATE TABLE test_move(v UInt64)
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ENGINE ReplicatedMergeTree('/clickhouse/shard_{}/tables/test_move', '{}')
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ORDER BY tuple()
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""".format(shard_ix, r.name))
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s0r0.query("SYSTEM STOP MERGES test_move")
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s0r1.query("SYSTEM STOP MERGES test_move")
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s0r0.query("INSERT INTO test_move VALUES (1)")
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s0r0.query("INSERT INTO test_move VALUES (2)")
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assert "2" == s0r0.query("SELECT count() FROM test_move").strip()
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assert "0" == s1r0.query("SELECT count() FROM test_move").strip()
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s0r0.query("ALTER TABLE test_move MOVE PART 'all_0_0_0' TO SHARD '/clickhouse/shard_1/tables/test_move'")
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print(s0r0.query("SELECT * FROM system.part_moves_between_shards"))
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s0r0.query("SYSTEM START MERGES test_move")
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s0r0.query("OPTIMIZE TABLE test_move FINAL")
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wait_for_state("DONE", s0r0, "test_move")
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for n in [s0r0, s0r1]:
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assert "1" == n.query("SELECT count() FROM test_move").strip()
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for n in [s1r0, s1r1]:
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assert "1" == n.query("SELECT count() FROM test_move").strip()
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# Move part back
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s1r0.query("ALTER TABLE test_move MOVE PART 'all_0_0_0' TO SHARD '/clickhouse/shard_0/tables/test_move'")
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wait_for_state("DONE", s1r0, "test_move")
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for n in [s0r0, s0r1]:
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assert "2" == n.query("SELECT count() FROM test_move").strip()
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for n in [s1r0, s1r1]:
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assert "0" == n.query("SELECT count() FROM test_move").strip()
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def test_deduplication_while_move(started_cluster):
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for shard_ix, rs in enumerate([[s0r0, s0r1], [s1r0, s1r1]]):
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for replica_ix, r in enumerate(rs):
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r.query("""
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DROP TABLE IF EXISTS test_deduplication;
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CREATE TABLE test_deduplication(v UInt64)
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ENGINE ReplicatedMergeTree('/clickhouse/shard_{}/tables/test_deduplication', '{}')
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ORDER BY tuple()
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""".format(shard_ix, r.name))
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r.query("""
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DROP TABLE IF EXISTS test_deduplication_d;
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CREATE TABLE test_deduplication_d AS test_deduplication
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ENGINE Distributed('test_cluster', '', test_deduplication)
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""")
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s0r0.query("SYSTEM STOP MERGES test_deduplication")
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s0r1.query("SYSTEM STOP MERGES test_deduplication")
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s0r0.query("INSERT INTO test_deduplication VALUES (1)")
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s0r0.query("INSERT INTO test_deduplication VALUES (2)")
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s0r1.query("SYSTEM SYNC REPLICA test_deduplication", timeout=20)
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assert "2" == s0r0.query("SELECT count() FROM test_deduplication").strip()
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assert "0" == s1r0.query("SELECT count() FROM test_deduplication").strip()
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s0r0.query(
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"ALTER TABLE test_deduplication MOVE PART 'all_0_0_0' TO SHARD '/clickhouse/shard_1/tables/test_deduplication'")
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s0r0.query("SYSTEM START MERGES test_deduplication")
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expected = """
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1
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2
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"""
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def deduplication_invariant_test():
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n = random.choice(list(started_cluster.instances.values()))
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assert TSV(
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n.query("SELECT * FROM test_deduplication_d ORDER BY v",
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settings={"allow_experimental_query_deduplication": 1})
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) == TSV(expected)
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# https://github.com/ClickHouse/ClickHouse/issues/34089
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assert TSV(
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n.query("SELECT count() FROM test_deduplication_d",
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settings={"allow_experimental_query_deduplication": 1})
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) == TSV("2")
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assert TSV(
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n.query("SELECT count() FROM test_deduplication_d",
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settings={"allow_experimental_query_deduplication": 1, "allow_experimental_projection_optimization": 1})
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) == TSV("2")
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deduplication_invariant = ConcurrentInvariant(deduplication_invariant_test)
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deduplication_invariant.start()
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wait_for_state("DONE", s0r0, "test_deduplication")
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deduplication_invariant.stop_and_assert_no_exception()
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def test_part_move_step_by_step(started_cluster):
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for shard_ix, rs in enumerate([[s0r0, s0r1], [s1r0, s1r1]]):
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for replica_ix, r in enumerate(rs):
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r.query("""
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DROP TABLE IF EXISTS test_part_move_step_by_step;
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CREATE TABLE test_part_move_step_by_step(v UInt64)
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ENGINE ReplicatedMergeTree('/clickhouse/shard_{}/tables/test_part_move_step_by_step', '{}')
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ORDER BY tuple()
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""".format(shard_ix, r.name))
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r.query("""
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DROP TABLE IF EXISTS test_part_move_step_by_step_d;
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CREATE TABLE test_part_move_step_by_step_d AS test_part_move_step_by_step
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ENGINE Distributed('test_cluster', currentDatabase(), test_part_move_step_by_step)
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""")
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s0r0.query("SYSTEM STOP MERGES test_part_move_step_by_step")
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s0r1.query("SYSTEM STOP MERGES test_part_move_step_by_step")
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s0r0.query("INSERT INTO test_part_move_step_by_step VALUES (1)")
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s0r0.query("INSERT INTO test_part_move_step_by_step VALUES (2)")
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s0r1.query("SYSTEM SYNC REPLICA test_part_move_step_by_step", timeout=20)
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assert "2" == s0r0.query("SELECT count() FROM test_part_move_step_by_step").strip()
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assert "0" == s1r0.query("SELECT count() FROM test_part_move_step_by_step").strip()
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expected = """
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1
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2
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"""
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def deduplication_invariant_test():
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n = random.choice(list(started_cluster.instances.values()))
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try:
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assert TSV(
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n.query("SELECT * FROM test_part_move_step_by_step_d ORDER BY v",
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settings={"allow_experimental_query_deduplication": 1})
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) == TSV(expected)
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except QueryRuntimeException as e:
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# ignore transient errors that are caused by us restarting nodes
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if e.returncode not in transient_ch_errors:
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raise e
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deduplication_invariant = ConcurrentInvariant(deduplication_invariant_test)
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deduplication_invariant.start()
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# Stop a source replica to prevent SYNC_SOURCE succeeding.
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s0r1.stop_clickhouse()
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s0r0.query(
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"ALTER TABLE test_part_move_step_by_step MOVE PART 'all_0_0_0' TO SHARD '/clickhouse/shard_1/tables/test_part_move_step_by_step'")
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# Should hang on SYNC_SOURCE until all source replicas acknowledge new pinned UUIDs.
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wait_for_state("SYNC_SOURCE", s0r0, "test_part_move_step_by_step", "Some replicas haven\\'t processed event")
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deduplication_invariant.assert_no_exception()
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# Start all replicas in source shard but stop a replica in destination shard
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# to prevent SYNC_DESTINATION succeeding.
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s1r1.stop_clickhouse()
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s0r1.start_clickhouse()
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# After SYNC_SOURCE step no merges will be assigned.
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s0r0.query("SYSTEM START MERGES test_part_move_step_by_step; OPTIMIZE TABLE test_part_move_step_by_step;")
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s0r1.query("SYSTEM START MERGES test_part_move_step_by_step; OPTIMIZE TABLE test_part_move_step_by_step;")
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wait_for_state("SYNC_DESTINATION", s0r0, "test_part_move_step_by_step", "Some replicas haven\\'t processed event")
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deduplication_invariant.assert_no_exception()
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# Start previously stopped replica in destination shard to let SYNC_DESTINATION
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# succeed.
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# Stop the other replica in destination shard to prevent DESTINATION_FETCH succeed.
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s1r0.stop_clickhouse()
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s1r1.start_clickhouse()
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wait_for_state("DESTINATION_FETCH", s0r0, "test_part_move_step_by_step", "Some replicas haven\\'t processed event")
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deduplication_invariant.assert_no_exception()
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# Start previously stopped replica in destination shard to let DESTINATION_FETCH
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# succeed.
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# Stop the other replica in destination shard to prevent DESTINATION_ATTACH succeed.
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s1r1.stop_clickhouse()
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s1r0.start_clickhouse()
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wait_for_state("DESTINATION_ATTACH", s0r0, "test_part_move_step_by_step", "Some replicas haven\\'t processed event")
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deduplication_invariant.assert_no_exception()
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# Start all replicas in destination shard to let DESTINATION_ATTACH succeed.
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# Stop a source replica to prevent SOURCE_DROP succeeding.
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s0r0.stop_clickhouse()
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s1r1.start_clickhouse()
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wait_for_state("SOURCE_DROP", s0r1, "test_part_move_step_by_step", "Some replicas haven\\'t processed event")
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deduplication_invariant.assert_no_exception()
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s0r0.start_clickhouse()
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wait_for_state("DONE", s0r1, "test_part_move_step_by_step")
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deduplication_invariant.assert_no_exception()
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# No hung tasks in replication queue. Would timeout otherwise.
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for instance in started_cluster.instances.values():
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instance.query("SYSTEM SYNC REPLICA test_part_move_step_by_step")
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assert "1" == s0r0.query("SELECT count() FROM test_part_move_step_by_step").strip()
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assert "1" == s1r0.query("SELECT count() FROM test_part_move_step_by_step").strip()
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deduplication_invariant.stop_and_assert_no_exception()
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def test_part_move_step_by_step_kill(started_cluster):
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for shard_ix, rs in enumerate([[s0r0, s0r1], [s1r0, s1r1]]):
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for replica_ix, r in enumerate(rs):
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r.query("""
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DROP TABLE IF EXISTS test_part_move_step_by_step_kill;
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CREATE TABLE test_part_move_step_by_step_kill(v UInt64)
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ENGINE ReplicatedMergeTree('/clickhouse/shard_{}/tables/test_part_move_step_by_step_kill', '{}')
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ORDER BY tuple()
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""".format(shard_ix, r.name))
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r.query("""
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DROP TABLE IF EXISTS test_part_move_step_by_step_kill_d;
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CREATE TABLE test_part_move_step_by_step_kill_d AS test_part_move_step_by_step_kill
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ENGINE Distributed('test_cluster', currentDatabase(), test_part_move_step_by_step_kill)
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""")
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s0r0.query("SYSTEM STOP MERGES test_part_move_step_by_step_kill")
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s0r1.query("SYSTEM STOP MERGES test_part_move_step_by_step_kill")
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s0r0.query("INSERT INTO test_part_move_step_by_step_kill VALUES (1)")
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s0r0.query("INSERT INTO test_part_move_step_by_step_kill VALUES (2)")
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s0r1.query("SYSTEM SYNC REPLICA test_part_move_step_by_step_kill", timeout=20)
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assert "2" == s0r0.query("SELECT count() FROM test_part_move_step_by_step_kill").strip()
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assert "0" == s1r0.query("SELECT count() FROM test_part_move_step_by_step_kill").strip()
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expected = """
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1
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2
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"""
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def deduplication_invariant_test():
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n = random.choice(list(started_cluster.instances.values()))
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try:
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assert TSV(
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n.query("SELECT * FROM test_part_move_step_by_step_kill_d ORDER BY v",
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settings={
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"allow_experimental_query_deduplication": 1
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})
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) == TSV(expected)
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except QueryRuntimeException as e:
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# ignore transient errors that are caused by us restarting nodes
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if e.returncode not in transient_ch_errors:
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raise e
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deduplication_invariant = ConcurrentInvariant(deduplication_invariant_test)
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deduplication_invariant.start()
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# Stop a source replica to prevent SYNC_SOURCE succeeding.
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s0r1.stop_clickhouse()
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s0r0.query(
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"ALTER TABLE test_part_move_step_by_step_kill MOVE PART 'all_0_0_0' TO SHARD '/clickhouse/shard_1/tables/test_part_move_step_by_step_kill'")
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# Should hang on SYNC_SOURCE until all source replicas acknowledge new pinned UUIDs.
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wait_for_state("SYNC_SOURCE", s0r0, "test_part_move_step_by_step_kill", "Some replicas haven\\'t processed event")
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deduplication_invariant.assert_no_exception()
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# Start all replicas in source shard but stop a replica in destination shard
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# to prevent SYNC_DESTINATION succeeding.
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s1r1.stop_clickhouse()
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s0r1.start_clickhouse()
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# After SYNC_SOURCE step no merges will be assigned.
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s0r0.query("SYSTEM START MERGES test_part_move_step_by_step_kill; OPTIMIZE TABLE test_part_move_step_by_step_kill;")
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s0r1.query("SYSTEM START MERGES test_part_move_step_by_step_kill; OPTIMIZE TABLE test_part_move_step_by_step_kill;")
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wait_for_state("SYNC_DESTINATION", s0r0, "test_part_move_step_by_step_kill",
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"Some replicas haven\\'t processed event")
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deduplication_invariant.assert_no_exception()
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# Start previously stopped replica in destination shard to let SYNC_DESTINATION
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# succeed.
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# Stop the other replica in destination shard to prevent DESTINATION_FETCH succeed.
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s1r0.stop_clickhouse()
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s1r1.start_clickhouse()
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wait_for_state("DESTINATION_FETCH", s0r0, "test_part_move_step_by_step_kill",
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"Some replicas haven\\'t processed event")
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# Start previously stopped replica in destination shard to let DESTINATION_FETCH
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# succeed.
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# Stop the other replica in destination shard to prevent DESTINATION_ATTACH succeed.
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s1r1.stop_clickhouse()
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s1r0.start_clickhouse()
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wait_for_state("DESTINATION_ATTACH", s0r0, "test_part_move_step_by_step_kill",
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"Some replicas haven\\'t processed event")
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deduplication_invariant.assert_no_exception()
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# Rollback here.
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s0r0.query("""
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KILL PART_MOVE_TO_SHARD
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WHERE task_uuid = (SELECT task_uuid FROM system.part_moves_between_shards WHERE table = 'test_part_move_step_by_step_kill')
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""")
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wait_for_state("DESTINATION_ATTACH", s0r0, "test_part_move_step_by_step_kill",
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assert_exception_msg="Some replicas haven\\'t processed event",
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assert_rollback=True)
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s1r1.start_clickhouse()
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wait_for_state("CANCELLED", s0r0, "test_part_move_step_by_step_kill", assert_rollback=True)
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deduplication_invariant.assert_no_exception()
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# No hung tasks in replication queue. Would timeout otherwise.
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for instance in started_cluster.instances.values():
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instance.query("SYSTEM SYNC REPLICA test_part_move_step_by_step_kill")
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assert "2" == s0r0.query("SELECT count() FROM test_part_move_step_by_step_kill").strip()
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assert "0" == s1r0.query("SELECT count() FROM test_part_move_step_by_step_kill").strip()
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deduplication_invariant.stop_and_assert_no_exception()
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def test_move_not_permitted(started_cluster):
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# Verify that invariants for part compatibility are checked.
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# Tests are executed in order. Make sure cluster is up if previous test
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# failed.
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s0r0.start_clickhouse()
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s1r0.start_clickhouse()
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for ix, n in enumerate([s0r0, s1r0]):
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n.query("""
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DROP TABLE IF EXISTS not_permitted_columns;
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CREATE TABLE not_permitted_columns(v_{ix} UInt64)
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ENGINE ReplicatedMergeTree('/clickhouse/shard_{ix}/tables/not_permitted_columns', 'r')
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ORDER BY tuple();
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""".format(ix=ix))
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partition = "date"
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if ix > 0:
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partition = "v"
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n.query("""
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DROP TABLE IF EXISTS not_permitted_partition;
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CREATE TABLE not_permitted_partition(date Date, v UInt64)
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ENGINE ReplicatedMergeTree('/clickhouse/shard_{ix}/tables/not_permitted_partition', 'r')
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PARTITION BY ({partition})
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ORDER BY tuple();
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""".format(ix=ix, partition=partition))
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s0r0.query("INSERT INTO not_permitted_columns VALUES (1)")
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s0r0.query("INSERT INTO not_permitted_partition VALUES ('2021-09-03', 1)")
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with pytest.raises(QueryRuntimeException, match="DB::Exception: Source and destination are the same"):
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s0r0.query("ALTER TABLE not_permitted_columns MOVE PART 'all_0_0_0' TO SHARD '/clickhouse/shard_0/tables/not_permitted_columns'")
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with pytest.raises(QueryRuntimeException, match="DB::Exception: Table columns structure in ZooKeeper is different from local table structure."):
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s0r0.query("ALTER TABLE not_permitted_columns MOVE PART 'all_0_0_0' TO SHARD '/clickhouse/shard_1/tables/not_permitted_columns'")
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with pytest.raises(QueryRuntimeException, match="DB::Exception: Existing table metadata in ZooKeeper differs in partition key expression."):
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s0r0.query("ALTER TABLE not_permitted_partition MOVE PART '20210903_0_0_0' TO SHARD '/clickhouse/shard_1/tables/not_permitted_partition'")
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def wait_for_state(desired_state, instance, test_table, assert_exception_msg=None, assert_rollback=False):
|
|
last_debug_print_time = time.time()
|
|
|
|
print("Waiting to reach state: {}".format(desired_state))
|
|
if assert_exception_msg:
|
|
print(" with exception contents: {}".format(assert_exception_msg))
|
|
if assert_rollback:
|
|
print(" and rollback: {}".format(assert_rollback))
|
|
|
|
while True:
|
|
tasks = TSV.toMat(instance.query(
|
|
"SELECT state, num_tries, last_exception, rollback FROM system.part_moves_between_shards WHERE table = '{}'".format(
|
|
test_table)))
|
|
assert len(tasks) == 1, "only one task expected in this test"
|
|
|
|
if time.time() - last_debug_print_time > 30:
|
|
last_debug_print_time = time.time()
|
|
print("Current state: ", tasks)
|
|
|
|
[state, num_tries, last_exception, rollback] = tasks[0]
|
|
|
|
if state == desired_state:
|
|
if assert_exception_msg and int(num_tries) < 3:
|
|
# Let the task be retried a few times when expecting an exception
|
|
# to make sure the exception is persistent and the code doesn't
|
|
# accidentally continue to run when we expect it not to.
|
|
continue
|
|
|
|
if assert_exception_msg:
|
|
assert assert_exception_msg in last_exception
|
|
|
|
if assert_rollback:
|
|
assert int(rollback) == 1, "rollback bit isn't set"
|
|
|
|
break
|
|
elif state in ["DONE", "CANCELLED"]:
|
|
raise Exception("Reached terminal state {}, but was waiting for {}".format(state, desired_state))
|
|
|
|
time.sleep(0.1)
|
|
|
|
|
|
class ConcurrentInvariant:
|
|
def __init__(self, invariant_test, loop_sleep=0.1):
|
|
self.invariant_test = invariant_test
|
|
self.loop_sleep = loop_sleep
|
|
|
|
self.started = False
|
|
self.exiting = False
|
|
self.exception = None
|
|
self.thread = threading.Thread(target=self._loop)
|
|
|
|
def start(self):
|
|
if self.started:
|
|
raise Exception('invariant thread already started')
|
|
|
|
self.started = True
|
|
self.thread.start()
|
|
|
|
def stop_and_assert_no_exception(self):
|
|
self._assert_started()
|
|
|
|
self.exiting = True
|
|
self.thread.join()
|
|
|
|
if self.exception:
|
|
raise self.exception
|
|
|
|
def assert_no_exception(self):
|
|
self._assert_started()
|
|
|
|
if self.exception:
|
|
raise self.exception
|
|
|
|
def _loop(self):
|
|
try:
|
|
while not self.exiting:
|
|
self.invariant_test()
|
|
time.sleep(self.loop_sleep)
|
|
except Exception as e:
|
|
self.exiting = True
|
|
self.exception = e
|
|
|
|
def _assert_started(self):
|
|
if not self.started:
|
|
raise Exception('invariant thread not started, forgot to call start?')
|