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152 lines
5.5 KiB
Python
152 lines
5.5 KiB
Python
import os.path
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import pytest
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from helpers.cluster import ClickHouseCluster
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from helpers.test_tools import TSV
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cluster = ClickHouseCluster(__file__)
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instance = cluster.add_instance('instance')
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q = instance.query
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path_to_data = '/var/lib/clickhouse/'
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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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q('CREATE DATABASE test ENGINE = Ordinary')
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yield cluster
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finally:
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cluster.shutdown()
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def exec_bash(cmd):
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cmd = '/bin/bash -c "{}"'.format(cmd.replace('"', '\\"'))
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return instance.exec_in_container(cmd)
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def copy_backup_to_detached(database, src_table, dst_table):
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fp_increment = os.path.join(path_to_data, 'shadow/increment.txt')
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increment = exec_bash('cat ' + fp_increment).strip()
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fp_backup = os.path.join(path_to_data, 'shadow', increment, 'data', database, src_table)
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fp_detached = os.path.join(path_to_data, 'data', database, dst_table, 'detached')
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exec_bash('cp -r {}/* {}/'.format(fp_backup, fp_detached))
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@pytest.fixture
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def backup_restore(started_cluster):
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q("DROP TABLE IF EXISTS test.tbl")
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q("CREATE TABLE test.tbl (p Date, k Int8) ENGINE = MergeTree PARTITION BY toYYYYMM(p) ORDER BY p")
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for i in range(1, 4):
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q('INSERT INTO test.tbl (p, k) VALUES(toDate({}), {})'.format(i, i))
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for i in range(31, 34):
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q('INSERT INTO test.tbl (p, k) VALUES(toDate({}), {})'.format(i, i))
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expected = TSV('1970-01-02\t1\n1970-01-03\t2\n1970-01-04\t3\n1970-02-01\t31\n1970-02-02\t32\n1970-02-03\t33')
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res = q("SELECT * FROM test.tbl ORDER BY p")
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assert(TSV(res) == expected)
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q("ALTER TABLE test.tbl FREEZE")
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yield
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q("DROP TABLE IF EXISTS test.tbl")
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def test_restore(backup_restore):
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q("CREATE TABLE test.tbl1 AS test.tbl")
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copy_backup_to_detached('test', 'tbl', 'tbl1')
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# The data_version of parts to be attached are larger than the newly created table's data_version.
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q("ALTER TABLE test.tbl1 ATTACH PARTITION 197001")
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q("ALTER TABLE test.tbl1 ATTACH PARTITION 197002")
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q("SELECT sleep(2)")
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# Validate the attached parts are identical to the backup.
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expected = TSV('1970-01-02\t1\n1970-01-03\t2\n1970-01-04\t3\n1970-02-01\t31\n1970-02-02\t32\n1970-02-03\t33')
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res = q("SELECT * FROM test.tbl1 ORDER BY p")
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assert(TSV(res) == expected)
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q("ALTER TABLE test.tbl1 UPDATE k=10 WHERE 1")
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q("SELECT sleep(2)")
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# Validate mutation has been applied to all attached parts.
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expected = TSV('1970-01-02\t10\n1970-01-03\t10\n1970-01-04\t10\n1970-02-01\t10\n1970-02-02\t10\n1970-02-03\t10')
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res = q("SELECT * FROM test.tbl1 ORDER BY p")
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assert(TSV(res) == expected)
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q("DROP TABLE IF EXISTS test.tbl1")
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def test_attach_partition(backup_restore):
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q("CREATE TABLE test.tbl2 AS test.tbl")
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for i in range(3, 5):
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q('INSERT INTO test.tbl2(p, k) VALUES(toDate({}), {})'.format(i, i))
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for i in range(33, 35):
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q('INSERT INTO test.tbl2(p, k) VALUES(toDate({}), {})'.format(i, i))
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expected = TSV('1970-01-04\t3\n1970-01-05\t4\n1970-02-03\t33\n1970-02-04\t34')
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res = q("SELECT * FROM test.tbl2 ORDER BY p")
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assert(TSV(res) == expected)
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copy_backup_to_detached('test', 'tbl', 'tbl2')
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# The data_version of parts to be attached
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# - may be less than, equal to or larger than the current table's data_version.
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# - may intersect with the existing parts of a partition.
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q("ALTER TABLE test.tbl2 ATTACH PARTITION 197001")
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q("ALTER TABLE test.tbl2 ATTACH PARTITION 197002")
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q("SELECT sleep(2)")
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expected = TSV('1970-01-02\t1\n1970-01-03\t2\n1970-01-04\t3\n1970-01-04\t3\n1970-01-05\t4\n1970-02-01\t31\n1970-02-02\t32\n1970-02-03\t33\n1970-02-03\t33\n1970-02-04\t34')
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res = q("SELECT * FROM test.tbl2 ORDER BY p")
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assert(TSV(res) == expected)
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q("ALTER TABLE test.tbl2 UPDATE k=10 WHERE 1")
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q("SELECT sleep(2)")
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# Validate mutation has been applied to all attached parts.
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expected = TSV('1970-01-02\t10\n1970-01-03\t10\n1970-01-04\t10\n1970-01-04\t10\n1970-01-05\t10\n1970-02-01\t10\n1970-02-02\t10\n1970-02-03\t10\n1970-02-03\t10\n1970-02-04\t10')
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res = q("SELECT * FROM test.tbl2 ORDER BY p")
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assert(TSV(res) == expected)
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q("DROP TABLE IF EXISTS test.tbl2")
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def test_replace_partition(backup_restore):
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q("CREATE TABLE test.tbl3 AS test.tbl")
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for i in range(3, 5):
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q('INSERT INTO test.tbl3(p, k) VALUES(toDate({}), {})'.format(i, i))
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for i in range(33, 35):
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q('INSERT INTO test.tbl3(p, k) VALUES(toDate({}), {})'.format(i, i))
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expected = TSV('1970-01-04\t3\n1970-01-05\t4\n1970-02-03\t33\n1970-02-04\t34')
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res = q("SELECT * FROM test.tbl3 ORDER BY p")
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assert(TSV(res) == expected)
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copy_backup_to_detached('test', 'tbl', 'tbl3')
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# The data_version of parts to be copied
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# - may be less than, equal to or larger than the current table data_version.
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# - may intersect with the existing parts of a partition.
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q("ALTER TABLE test.tbl3 REPLACE PARTITION 197002 FROM test.tbl")
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q("SELECT sleep(2)")
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expected = TSV('1970-01-04\t3\n1970-01-05\t4\n1970-02-01\t31\n1970-02-02\t32\n1970-02-03\t33')
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res = q("SELECT * FROM test.tbl3 ORDER BY p")
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assert(TSV(res) == expected)
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q("ALTER TABLE test.tbl3 UPDATE k=10 WHERE 1")
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q("SELECT sleep(2)")
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# Validate mutation has been applied to all copied parts.
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expected = TSV('1970-01-04\t10\n1970-01-05\t10\n1970-02-01\t10\n1970-02-02\t10\n1970-02-03\t10')
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res = q("SELECT * FROM test.tbl3 ORDER BY p")
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assert(TSV(res) == expected)
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q("DROP TABLE IF EXISTS test.tbl3")
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