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229 lines
7.5 KiB
Python
229 lines
7.5 KiB
Python
from time import sleep
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import pytest
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import os.path
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from helpers.cluster import ClickHouseCluster
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from helpers.test_tools import TSV, assert_eq_with_retry
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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/remote_servers.xml", "configs/backups_disk.xml"],
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user_configs=["configs/allow_experimental_database_replicated.xml"],
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external_dirs=["/backups/"],
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macros={"replica": "node1", "shard": "shard1"},
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with_zookeeper=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/remote_servers.xml", "configs/backups_disk.xml"],
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user_configs=["configs/allow_experimental_database_replicated.xml"],
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external_dirs=["/backups/"],
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macros={"replica": "node2", "shard": "shard1"},
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with_zookeeper=True,
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)
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@pytest.fixture(scope="module", autouse=True)
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def start_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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@pytest.fixture(autouse=True)
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def drop_after_test():
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try:
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yield
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finally:
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node1.query("DROP TABLE IF EXISTS tbl ON CLUSTER 'cluster' NO DELAY")
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node1.query("DROP DATABASE IF EXISTS mydb ON CLUSTER 'cluster' NO DELAY")
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backup_id_counter = 0
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def new_backup_name():
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global backup_id_counter
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backup_id_counter += 1
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return f"Disk('backups', '{backup_id_counter}')"
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def get_path_to_backup(backup_name):
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name = backup_name.split(",")[1].strip("')/ ")
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return os.path.join(instance.cluster.instances_dir, "backups", name)
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def test_replicated_table():
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node1.query(
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"CREATE TABLE tbl ON CLUSTER 'cluster' ("
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"x UInt8, y String"
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") ENGINE=ReplicatedMergeTree('/clickhouse/tables/tbl/', '{replica}')"
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"ORDER BY x"
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)
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node1.query("INSERT INTO tbl VALUES (1, 'Don''t')")
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node2.query("INSERT INTO tbl VALUES (2, 'count')")
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node1.query("INSERT INTO tbl SETTINGS async_insert=true VALUES (3, 'your')")
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node2.query("INSERT INTO tbl SETTINGS async_insert=true VALUES (4, 'chickens')")
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node1.query("SYSTEM SYNC REPLICA ON CLUSTER 'cluster' tbl")
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backup_name = new_backup_name()
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# Make backup on node 1.
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node1.query(
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f"BACKUP TABLE tbl ON CLUSTER 'cluster' TO {backup_name} SETTINGS replica_num=1"
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)
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# Drop table on both nodes.
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node1.query(f"DROP TABLE tbl ON CLUSTER 'cluster' NO DELAY")
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# Restore from backup on node2.
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node2.query(f"RESTORE TABLE tbl ON CLUSTER 'cluster' FROM {backup_name}")
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node1.query("SYSTEM SYNC REPLICA ON CLUSTER 'cluster' tbl")
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assert node2.query("SELECT * FROM tbl ORDER BY x") == TSV(
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[[1, "Don\\'t"], [2, "count"], [3, "your"], [4, "chickens"]]
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)
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assert node1.query("SELECT * FROM tbl ORDER BY x") == TSV(
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[[1, "Don\\'t"], [2, "count"], [3, "your"], [4, "chickens"]]
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)
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def test_replicated_database():
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node1.query(
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"CREATE DATABASE mydb ON CLUSTER 'cluster' ENGINE=Replicated('/clickhouse/path/','{shard}','{replica}')"
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)
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node1.query(
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"CREATE TABLE mydb.tbl(x UInt8, y String) ENGINE=ReplicatedMergeTree ORDER BY x"
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)
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node2.query("SYSTEM SYNC DATABASE REPLICA mydb")
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node1.query("INSERT INTO mydb.tbl VALUES (1, 'Don''t')")
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node2.query("INSERT INTO mydb.tbl VALUES (2, 'count')")
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node1.query("INSERT INTO mydb.tbl VALUES (3, 'your')")
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node2.query("INSERT INTO mydb.tbl VALUES (4, 'chickens')")
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node1.query("SYSTEM SYNC REPLICA ON CLUSTER 'cluster' mydb.tbl")
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# Make backup.
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backup_name = new_backup_name()
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node1.query(
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f"BACKUP DATABASE mydb ON CLUSTER 'cluster' TO {backup_name} SETTINGS replica_num=2"
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)
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# Drop table on both nodes.
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node1.query("DROP DATABASE mydb ON CLUSTER 'cluster' NO DELAY")
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# Restore from backup on node2.
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node1.query(f"RESTORE DATABASE mydb ON CLUSTER 'cluster' FROM {backup_name}")
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node1.query("SYSTEM SYNC REPLICA ON CLUSTER 'cluster' mydb.tbl")
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assert node1.query("SELECT * FROM mydb.tbl ORDER BY x") == TSV(
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[[1, "Don\\'t"], [2, "count"], [3, "your"], [4, "chickens"]]
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)
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assert node2.query("SELECT * FROM mydb.tbl ORDER BY x") == TSV(
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[[1, "Don\\'t"], [2, "count"], [3, "your"], [4, "chickens"]]
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)
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def test_different_tables_on_nodes():
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node1.query(
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"CREATE TABLE tbl (`x` UInt8, `y` String) ENGINE = MergeTree ORDER BY x"
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)
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node2.query("CREATE TABLE tbl (`w` Int64) ENGINE = MergeTree ORDER BY w")
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node1.query(
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"INSERT INTO tbl VALUES (1, 'Don''t'), (2, 'count'), (3, 'your'), (4, 'chickens')"
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)
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node2.query("INSERT INTO tbl VALUES (-333), (-222), (-111), (0), (111)")
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backup_name = new_backup_name()
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node1.query(
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f"BACKUP TABLE tbl ON CLUSTER 'cluster' TO {backup_name} SETTINGS allow_storing_multiple_replicas = true"
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)
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node1.query("DROP TABLE tbl ON CLUSTER 'cluster' NO DELAY")
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node2.query(f"RESTORE TABLE tbl ON CLUSTER 'cluster' FROM {backup_name}")
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assert node1.query("SELECT * FROM tbl") == TSV(
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[[1, "Don\\'t"], [2, "count"], [3, "your"], [4, "chickens"]]
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)
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assert node2.query("SELECT * FROM tbl") == TSV([-333, -222, -111, 0, 111])
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def test_backup_restore_on_single_replica():
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node1.query(
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"CREATE DATABASE mydb ON CLUSTER 'cluster' ENGINE=Replicated('/clickhouse/path/','{shard}','{replica}')"
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)
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node1.query(
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"CREATE TABLE mydb.test (`name` String, `value` UInt32) ENGINE = ReplicatedMergeTree ORDER BY value"
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)
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node1.query("INSERT INTO mydb.test VALUES ('abc', 1), ('def', 2)")
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node1.query("INSERT INTO mydb.test VALUES ('ghi', 3)")
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backup_name = new_backup_name()
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node1.query(f"BACKUP DATABASE mydb TO {backup_name}")
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node1.query("DROP DATABASE mydb NO DELAY")
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# Cannot restore table because it already contains data on other replicas.
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expected_error = (
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"Cannot restore table mydb.test because it already contains some data"
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)
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assert expected_error in node1.query_and_get_error(
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f"RESTORE DATABASE mydb FROM {backup_name}"
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)
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# Can restore table with structure_only=true.
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node1.query(
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f"RESTORE DATABASE mydb FROM {backup_name} SETTINGS structure_only=true"
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)
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node1.query("SYSTEM SYNC REPLICA mydb.test")
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assert node1.query("SELECT * FROM mydb.test ORDER BY name") == TSV(
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[["abc", 1], ["def", 2], ["ghi", 3]]
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)
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# Can restore table with allow_non_empty_tables=true.
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node1.query("DROP DATABASE mydb NO DELAY")
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node1.query(
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f"RESTORE DATABASE mydb FROM {backup_name} SETTINGS allow_non_empty_tables=true"
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)
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node1.query("SYSTEM SYNC REPLICA mydb.test")
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assert node1.query("SELECT * FROM mydb.test ORDER BY name") == TSV(
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[["abc", 1], ["abc", 1], ["def", 2], ["def", 2], ["ghi", 3], ["ghi", 3]]
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)
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def test_table_with_parts_in_queue_considered_non_empty():
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node1.query(
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"CREATE DATABASE mydb ON CLUSTER 'cluster' ENGINE=Replicated('/clickhouse/path/','{shard}','{replica}')"
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)
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node1.query(
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"CREATE TABLE mydb.test (`x` UInt32) ENGINE = ReplicatedMergeTree ORDER BY x"
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)
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node1.query("INSERT INTO mydb.test SELECT number AS x FROM numbers(10000000)")
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backup_name = new_backup_name()
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node1.query(f"BACKUP DATABASE mydb TO {backup_name}")
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node1.query("DROP DATABASE mydb NO DELAY")
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# Cannot restore table because it already contains data on other replicas.
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expected_error = (
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"Cannot restore table mydb.test because it already contains some data"
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)
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assert expected_error in node1.query_and_get_error(
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f"RESTORE DATABASE mydb FROM {backup_name}"
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)
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