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197 lines
7.1 KiB
Python
197 lines
7.1 KiB
Python
import pytest
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from helpers.cluster import ClickHouseCluster
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cluster = ClickHouseCluster(__file__)
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node = cluster.add_instance(
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"node",
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main_configs=["configs/transactions.xml"],
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stay_alive=True,
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with_zookeeper=True,
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)
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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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yield cluster
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finally:
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cluster.shutdown()
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def tx(session, query):
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params = {"session_id": "session_{}".format(session)}
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return node.http_query(None, data=query, params=params)
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def test_rollback_unfinished_on_restart1(start_cluster):
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node.query(
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"create table mt (n int, m int) engine=MergeTree order by n partition by n % 2 settings remove_empty_parts = 0"
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)
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node.query("insert into mt values (1, 10), (2, 20)")
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tid0 = "(1,1,'00000000-0000-0000-0000-000000000000')"
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# it will hold a snapshot and avoid parts cleanup
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tx(0, "begin transaction")
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tx(4, "begin transaction")
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tx(1, "begin transaction")
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tid1 = tx(1, "select transactionID()").strip()
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tx(1, "alter table mt drop partition id '1'")
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tx(1, "commit")
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tx(1, "begin transaction")
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tid2 = tx(1, "select transactionID()").strip()
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tx(1, "insert into mt values (3, 30), (4, 40)")
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tx(1, "commit")
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node.query("system flush logs")
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csn1 = node.query(
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"select csn from system.transactions_info_log where type='Commit' and tid={}".format(
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tid1
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)
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).strip()
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csn2 = node.query(
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"select csn from system.transactions_info_log where type='Commit' and tid={}".format(
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tid2
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)
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).strip()
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# insert a part before starting mutation and check that it will not be mutated
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tx(4, "insert into mt values (9, 90)")
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# check that uncommitted mutation will be rolled back on restart
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tx(1, "begin transaction")
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tid3 = tx(1, "select transactionID()").strip()
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tx(1, "insert into mt values (5, 50)")
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tx(1, "alter table mt update m = m+n in partition id '1' where 1")
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# check that uncommitted insert will be rolled back on restart (using `START TRANSACTION` syntax)
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tx(3, "start transaction")
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tid5 = tx(3, "select transactionID()").strip()
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tx(3, "insert into mt values (6, 70)")
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tid6 = tx(4, "select transactionID()").strip()
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tx(4, "commit")
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node.query("system flush logs")
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csn6 = node.query(
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"select csn from system.transactions_info_log where type='Commit' and tid={}".format(
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tid6
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)
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).strip()
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node.restart_clickhouse(kill=True)
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node.query("SYSTEM WAIT LOADING PARTS mt")
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assert (
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node.query("select *, _part from mt order by n")
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== "2\t20\t0_2_2_0\n3\t30\t1_3_3_0\n4\t40\t0_4_4_0\n9\t90\t1_5_5_0\n"
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)
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res = node.query(
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"select name, active, creation_tid, 'csn' || toString(creation_csn) || '_', removal_tid, 'csn' || toString(removal_csn) || '_' from system.parts where table='mt' order by name"
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)
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res = res.replace(tid0, "tid0")
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res = res.replace(tid1, "tid1").replace("csn" + csn1 + "_", "csn_1")
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res = res.replace(tid2, "tid2").replace("csn" + csn2 + "_", "csn_2")
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res = res.replace(tid3, "tid3")
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res = res.replace(tid5, "tid5")
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res = res.replace(tid6, "tid6").replace("csn" + csn6 + "_", "csn_6")
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assert (
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res
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== "0_2_2_0\t1\ttid0\tcsn1_\t(0,0,'00000000-0000-0000-0000-000000000000')\tcsn0_\n"
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"0_2_2_0_7\t0\ttid3\tcsn18446744073709551615_\ttid0\tcsn0_\n"
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"0_4_4_0\t1\ttid2\tcsn_2\t(0,0,'00000000-0000-0000-0000-000000000000')\tcsn0_\n"
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"0_4_4_0_7\t0\ttid3\tcsn18446744073709551615_\ttid0\tcsn0_\n"
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"0_8_8_0\t0\ttid5\tcsn18446744073709551615_\ttid0\tcsn0_\n"
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"1_1_1_0\t0\ttid0\tcsn1_\ttid1\tcsn_1\n"
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"1_3_3_0\t1\ttid2\tcsn_2\t(0,0,'00000000-0000-0000-0000-000000000000')\tcsn0_\n"
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"1_3_3_0_7\t0\ttid3\tcsn18446744073709551615_\ttid0\tcsn0_\n"
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"1_5_5_0\t1\ttid6\tcsn_6\t(0,0,'00000000-0000-0000-0000-000000000000')\tcsn0_\n"
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"1_6_6_0\t0\ttid3\tcsn18446744073709551615_\ttid0\tcsn0_\n"
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"1_6_6_0_7\t0\ttid3\tcsn18446744073709551615_\ttid0\tcsn0_\n"
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)
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def test_rollback_unfinished_on_restart2(start_cluster):
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node.query(
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"create table mt2 (n int, m int) engine=MergeTree order by n partition by n % 2 settings remove_empty_parts = 0"
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)
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node.query("insert into mt2 values (1, 10), (2, 20)")
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tid0 = "(1,1,'00000000-0000-0000-0000-000000000000')"
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# it will hold a snapshot and avoid parts cleanup
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tx(0, "begin transaction")
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tx(4, "begin transaction")
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tx(1, "begin transaction")
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tid1 = tx(1, "select transactionID()").strip()
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tx(1, "alter table mt2 drop partition id '1'")
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tx(1, "commit")
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tx(1, "begin transaction")
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tid2 = tx(1, "select transactionID()").strip()
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tx(1, "insert into mt2 values (3, 30), (4, 40)")
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tx(1, "commit")
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node.query("system flush logs")
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csn1 = node.query(
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"select csn from system.transactions_info_log where type='Commit' and tid={}".format(
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tid1
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)
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).strip()
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csn2 = node.query(
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"select csn from system.transactions_info_log where type='Commit' and tid={}".format(
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tid2
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)
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).strip()
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# check that uncommitted merge will be rolled back on restart
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tx(2, "begin transaction")
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tid4 = tx(2, "select transactionID()").strip()
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tx(
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2,
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"optimize table mt2 partition id '0' final settings optimize_throw_if_noop = 1",
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)
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# check that uncommitted insert will be rolled back on restart
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tx(3, "begin transaction")
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tid5 = tx(3, "select transactionID()").strip()
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tx(3, "insert into mt2 values (6, 70)")
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tid6 = tx(4, "select transactionID()").strip()
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tx(4, "commit")
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node.query("system flush logs")
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csn6 = node.query(
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"select csn from system.transactions_info_log where type='Commit' and tid={}".format(
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tid6
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)
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).strip()
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node.restart_clickhouse(kill=True)
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node.query("SYSTEM WAIT LOADING PARTS mt2")
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assert (
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node.query("select *, _part from mt2 order by n")
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== "2\t20\t0_2_2_0\n3\t30\t1_3_3_0\n4\t40\t0_4_4_0\n"
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)
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res = node.query(
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"select name, active, creation_tid, 'csn' || toString(creation_csn) || '_', removal_tid, 'csn' || toString(removal_csn) || '_' from system.parts where table='mt2' order by name"
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)
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res = res.replace(tid0, "tid0")
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res = res.replace(tid1, "tid1").replace("csn" + csn1 + "_", "csn_1")
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res = res.replace(tid2, "tid2").replace("csn" + csn2 + "_", "csn_2")
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res = res.replace(tid4, "tid4")
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res = res.replace(tid5, "tid5")
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res = res.replace(tid6, "tid6").replace("csn" + csn6 + "_", "csn_6")
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assert (
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res
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== "0_2_2_0\t1\ttid0\tcsn1_\t(0,0,'00000000-0000-0000-0000-000000000000')\tcsn0_\n"
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"0_2_4_1\t0\ttid4\tcsn18446744073709551615_\ttid0\tcsn0_\n"
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"0_4_4_0\t1\ttid2\tcsn_2\t(0,0,'00000000-0000-0000-0000-000000000000')\tcsn0_\n"
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"0_5_5_0\t0\ttid5\tcsn18446744073709551615_\ttid0\tcsn0_\n"
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"1_1_1_0\t0\ttid0\tcsn1_\ttid1\tcsn_1\n"
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"1_3_3_0\t1\ttid2\tcsn_2\t(0,0,'00000000-0000-0000-0000-000000000000')\tcsn0_\n"
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)
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