ClickHouse/tests/integration/test_storage_postgresql_replica/test.py

import pytest
import time
import psycopg2
import os.path as p

from helpers.cluster import ClickHouseCluster
from helpers.test_tools import assert_eq_with_retry
from psycopg2.extensions import ISOLATION_LEVEL_AUTOCOMMIT
from helpers.test_tools import TSV

import threading

cluster = ClickHouseCluster(__file__)
instance = cluster.add_instance(
    "instance",
    main_configs=["configs/log_conf.xml"],
    with_postgres=True,
    stay_alive=True,
)

postgres_table_template = """
    CREATE TABLE IF NOT EXISTS {} (
    key Integer NOT NULL, value Integer, PRIMARY KEY(key))
    """

queries = [
    "INSERT INTO {} select i, i from generate_series(0, 10000) as t(i);",
    "DELETE FROM {} WHERE (value*value) % 3 = 0;",
    "UPDATE {} SET value = value + 125 WHERE key % 2 = 0;",
    "UPDATE {} SET key=key+20000 WHERE key%2=0",
    "INSERT INTO {} select i, i from generate_series(40000, 50000) as t(i);",
    "DELETE FROM {} WHERE key % 10 = 0;",
    "UPDATE {} SET value = value + 101 WHERE key % 2 = 1;",
    "UPDATE {} SET key=key+80000 WHERE key%2=1",
    "DELETE FROM {} WHERE value % 2 = 0;",
    "UPDATE {} SET value = value + 2000 WHERE key % 5 = 0;",
    "INSERT INTO {} select i, i from generate_series(200000, 250000) as t(i);",
    "DELETE FROM {} WHERE value % 3 = 0;",
    "UPDATE {} SET value = value * 2 WHERE key % 3 = 0;",
    "UPDATE {} SET key=key+500000 WHERE key%2=1",
    "INSERT INTO {} select i, i from generate_series(1000000, 1050000) as t(i);",
    "DELETE FROM {} WHERE value % 9 = 2;",
    "UPDATE {} SET key=key+10000000",
    "UPDATE {} SET value = value + 2  WHERE key % 3 = 1;",
    "DELETE FROM {} WHERE value%5 = 0;",
]


@pytest.mark.timeout(30)
def check_tables_are_synchronized(
    table_name, order_by="key", postgres_database="postgres_database"
):
    expected = instance.query(
        "select * from {}.{} order by {};".format(
            postgres_database, table_name, order_by
        )
    )
    result = instance.query(
        "select * from test.{} order by {};".format(table_name, order_by)
    )

    while result != expected:
        time.sleep(0.5)
        result = instance.query(
            "select * from test.{} order by {};".format(table_name, order_by)
        )

    assert result == expected


def get_postgres_conn(
    ip, port, database=False, auto_commit=True, database_name="postgres_database"
):
    if database == True:
        conn_string = "host={} port={} dbname='{}' user='postgres' password='mysecretpassword'".format(
            ip, port, database_name
        )
    else:
        conn_string = (
            "host={} port={} user='postgres' password='mysecretpassword'".format(
                ip, port
            )
        )

    conn = psycopg2.connect(conn_string)
    if auto_commit:
        conn.set_isolation_level(ISOLATION_LEVEL_AUTOCOMMIT)
        conn.autocommit = True
    return conn


def create_postgres_db(cursor, name):
    cursor.execute("CREATE DATABASE {}".format(name))


def create_clickhouse_postgres_db(ip, port, name="postgres_database"):
    instance.query(
        """
            CREATE DATABASE {}
            ENGINE = PostgreSQL('{}:{}', '{}', 'postgres', 'mysecretpassword')""".format(
            name, ip, port, name
        )
    )


def create_materialized_table(ip, port, table_name='postgresql_replica'):
    instance.query(
        f"""
        CREATE TABLE test.{table_name} (key Int64, value Int64)
            ENGINE = MaterializedPostgreSQL(
            '{ip}:{port}', 'postgres_database', '{table_name}', 'postgres', 'mysecretpassword')
            PRIMARY KEY key; """
    )


def create_postgres_table(cursor, table_name, replica_identity_full=False):
    cursor.execute("DROP TABLE IF EXISTS {}".format(table_name))
    cursor.execute(postgres_table_template.format(table_name))
    if replica_identity_full:
        cursor.execute("ALTER TABLE {} REPLICA IDENTITY FULL;".format(table_name))


def postgresql_replica_check_result(
    result, check=False, ref_file="test_postgresql_replica.reference"
):
    fpath = p.join(p.dirname(__file__), ref_file)
    with open(fpath) as reference:
        if check:
            assert TSV(result) == TSV(reference)
        else:
            return TSV(result) == TSV(reference)


@pytest.fixture(scope="module")
def started_cluster():
    try:
        cluster.start()
        conn = get_postgres_conn(ip=cluster.postgres_ip, port=cluster.postgres_port)
        cursor = conn.cursor()
        create_postgres_db(cursor, "postgres_database")
        create_clickhouse_postgres_db(
            ip=cluster.postgres_ip, port=cluster.postgres_port
        )

        instance.query("CREATE DATABASE test")
        yield cluster

    finally:
        cluster.shutdown()


@pytest.mark.timeout(320)
def test_initial_load_from_snapshot(started_cluster):
    conn = get_postgres_conn(
        ip=started_cluster.postgres_ip,
        port=started_cluster.postgres_port,
        database=True,
    )
    cursor = conn.cursor()
    create_postgres_table(cursor, "postgresql_replica")
    instance.query(
        "INSERT INTO postgres_database.postgresql_replica SELECT number, number from numbers(50)"
    )

    instance.query("DROP TABLE IF EXISTS test.postgresql_replica")
    create_materialized_table(
        ip=started_cluster.postgres_ip, port=started_cluster.postgres_port
    )

    result = instance.query("SELECT * FROM test.postgresql_replica ORDER BY key;")
    while postgresql_replica_check_result(result) == False:
        time.sleep(0.2)
        result = instance.query("SELECT * FROM test.postgresql_replica ORDER BY key;")

    cursor.execute("DROP TABLE postgresql_replica;")
    postgresql_replica_check_result(result, True)


@pytest.mark.timeout(320)
def test_no_connection_at_startup(started_cluster):
    conn = get_postgres_conn(
        ip=started_cluster.postgres_ip,
        port=started_cluster.postgres_port,
        database=True,
    )
    cursor = conn.cursor()
    create_postgres_table(cursor, "postgresql_replica")
    instance.query(
        "INSERT INTO postgres_database.postgresql_replica SELECT number, number from numbers(50)"
    )

    instance.query("DROP TABLE IF EXISTS test.postgresql_replica")
    create_materialized_table(
        ip=started_cluster.postgres_ip, port=started_cluster.postgres_port
    )
    time.sleep(3)

    instance.query("DETACH TABLE test.postgresql_replica")
    started_cluster.pause_container("postgres1")

    instance.query("ATTACH TABLE test.postgresql_replica")
    time.sleep(3)
    started_cluster.unpause_container("postgres1")

    result = instance.query("SELECT count() FROM test.postgresql_replica;")
    while int(result) == 0:
        time.sleep(0.5)
        result = instance.query("SELECT count() FROM test.postgresql_replica;")

    result = instance.query("SELECT * FROM test.postgresql_replica ORDER BY key;")
    cursor.execute("DROP TABLE postgresql_replica;")
    postgresql_replica_check_result(result, True)


@pytest.mark.timeout(320)
def test_detach_attach_is_ok(started_cluster):
    conn = get_postgres_conn(
        ip=started_cluster.postgres_ip,
        port=started_cluster.postgres_port,
        database=True,
    )
    cursor = conn.cursor()
    create_postgres_table(cursor, "postgresql_replica")
    instance.query(
        "INSERT INTO postgres_database.postgresql_replica SELECT number, number from numbers(50)"
    )

    instance.query("DROP TABLE IF EXISTS test.postgresql_replica")
    create_materialized_table(
        ip=started_cluster.postgres_ip, port=started_cluster.postgres_port
    )

    result = instance.query("SELECT count() FROM test.postgresql_replica;")
    while int(result) == 0:
        time.sleep(0.2)
        result = instance.query("SELECT count() FROM test.postgresql_replica;")

    result = instance.query("SELECT * FROM test.postgresql_replica ORDER BY key;")
    postgresql_replica_check_result(result, True)

    instance.query("DETACH TABLE test.postgresql_replica")
    instance.query("ATTACH TABLE test.postgresql_replica")

    result = instance.query("SELECT * FROM test.postgresql_replica ORDER BY key;")
    while postgresql_replica_check_result(result) == False:
        time.sleep(0.5)
        result = instance.query("SELECT * FROM test.postgresql_replica ORDER BY key;")

    cursor.execute("DROP TABLE postgresql_replica;")
    postgresql_replica_check_result(result, True)


@pytest.mark.timeout(320)
def test_replicating_insert_queries(started_cluster):
    conn = get_postgres_conn(
        ip=started_cluster.postgres_ip,
        port=started_cluster.postgres_port,
        database=True,
    )
    cursor = conn.cursor()
    create_postgres_table(cursor, "postgresql_replica")

    instance.query(
        "INSERT INTO postgres_database.postgresql_replica SELECT number, number from numbers(10)"
    )

    instance.query("DROP TABLE IF EXISTS test.postgresql_replica")
    create_materialized_table(
        ip=started_cluster.postgres_ip, port=started_cluster.postgres_port
    )

    result = instance.query("SELECT count() FROM test.postgresql_replica;")
    while int(result) != 10:
        time.sleep(0.2)
        result = instance.query("SELECT count() FROM test.postgresql_replica;")

    instance.query(
        "INSERT INTO postgres_database.postgresql_replica SELECT 10 + number, 10 + number from numbers(10)"
    )
    instance.query(
        "INSERT INTO postgres_database.postgresql_replica SELECT 20 + number, 20 + number from numbers(10)"
    )

    result = instance.query("SELECT count() FROM test.postgresql_replica;")
    while int(result) != 30:
        time.sleep(0.2)
        result = instance.query("SELECT count() FROM test.postgresql_replica;")

    instance.query(
        "INSERT INTO postgres_database.postgresql_replica SELECT 30 + number, 30 + number from numbers(10)"
    )
    instance.query(
        "INSERT INTO postgres_database.postgresql_replica SELECT 40 + number, 40 + number from numbers(10)"
    )

    result = instance.query("SELECT count() FROM test.postgresql_replica;")
    while int(result) != 50:
        time.sleep(0.2)
        result = instance.query("SELECT count() FROM test.postgresql_replica;")

    result = instance.query("SELECT * FROM test.postgresql_replica ORDER BY key;")
    cursor.execute("DROP TABLE postgresql_replica;")
    postgresql_replica_check_result(result, True)


@pytest.mark.timeout(320)
def test_replicating_delete_queries(started_cluster):
    conn = get_postgres_conn(
        ip=started_cluster.postgres_ip,
        port=started_cluster.postgres_port,
        database=True,
    )
    cursor = conn.cursor()
    create_postgres_table(cursor, "postgresql_replica")

    instance.query(
        "INSERT INTO postgres_database.postgresql_replica SELECT number, number from numbers(50)"
    )

    instance.query("DROP TABLE IF EXISTS test.postgresql_replica")
    create_materialized_table(
        ip=started_cluster.postgres_ip, port=started_cluster.postgres_port
    )

    result = instance.query("SELECT * FROM test.postgresql_replica ORDER BY key;")
    while postgresql_replica_check_result(result) == False:
        time.sleep(0.2)
        result = instance.query("SELECT * FROM test.postgresql_replica ORDER BY key;")

    instance.query(
        "INSERT INTO postgres_database.postgresql_replica SELECT 50 + number, 50 + number from numbers(50)"
    )

    result = instance.query("SELECT count() FROM test.postgresql_replica;")
    while int(result) != 100:
        time.sleep(0.5)
        result = instance.query("SELECT count() FROM test.postgresql_replica;")

    cursor.execute("DELETE FROM postgresql_replica WHERE key > 49;")

    result = instance.query("SELECT * FROM test.postgresql_replica ORDER BY key;")
    while postgresql_replica_check_result(result) == False:
        time.sleep(0.5)
        result = instance.query("SELECT * FROM test.postgresql_replica ORDER BY key;")

    cursor.execute("DROP TABLE postgresql_replica;")
    postgresql_replica_check_result(result, True)


@pytest.mark.timeout(320)
def test_replicating_update_queries(started_cluster):
    conn = get_postgres_conn(
        ip=started_cluster.postgres_ip,
        port=started_cluster.postgres_port,
        database=True,
    )
    cursor = conn.cursor()
    create_postgres_table(cursor, "postgresql_replica")

    instance.query(
        "INSERT INTO postgres_database.postgresql_replica SELECT number, number + 10 from numbers(50)"
    )

    instance.query("DROP TABLE IF EXISTS test.postgresql_replica")
    create_materialized_table(
        ip=started_cluster.postgres_ip, port=started_cluster.postgres_port
    )

    result = instance.query("SELECT count() FROM test.postgresql_replica;")
    while int(result) != 50:
        time.sleep(0.2)
        result = instance.query("SELECT count() FROM test.postgresql_replica;")

    cursor.execute("UPDATE postgresql_replica SET value = value - 10;")

    result = instance.query("SELECT * FROM test.postgresql_replica ORDER BY key;")
    while postgresql_replica_check_result(result) == False:
        time.sleep(0.5)
        result = instance.query("SELECT * FROM test.postgresql_replica ORDER BY key;")

    cursor.execute("DROP TABLE postgresql_replica;")
    postgresql_replica_check_result(result, True)


@pytest.mark.timeout(320)
def test_resume_from_written_version(started_cluster):
    conn = get_postgres_conn(
        ip=started_cluster.postgres_ip,
        port=started_cluster.postgres_port,
        database=True,
    )
    cursor = conn.cursor()
    create_postgres_table(cursor, "postgresql_replica")
    instance.query(
        "INSERT INTO postgres_database.postgresql_replica SELECT number, number + 10 from numbers(50)"
    )

    instance.query("DROP TABLE IF EXISTS test.postgresql_replica")
    create_materialized_table(
        ip=started_cluster.postgres_ip, port=started_cluster.postgres_port
    )

    result = instance.query("SELECT count() FROM test.postgresql_replica;")
    while int(result) != 50:
        time.sleep(0.2)
        result = instance.query("SELECT count() FROM test.postgresql_replica;")

    instance.query(
        "INSERT INTO postgres_database.postgresql_replica SELECT 50 + number, 50 + number from numbers(50)"
    )

    result = instance.query("SELECT count() FROM test.postgresql_replica;")
    while int(result) != 100:
        time.sleep(0.2)
        result = instance.query("SELECT count() FROM test.postgresql_replica;")

    instance.query("DETACH TABLE test.postgresql_replica")

    cursor.execute("DELETE FROM postgresql_replica WHERE key > 49;")
    cursor.execute("UPDATE postgresql_replica SET value = value - 10;")

    instance.query("ATTACH TABLE test.postgresql_replica")

    result = instance.query("SELECT * FROM test.postgresql_replica ORDER BY key;")
    while postgresql_replica_check_result(result) == False:
        time.sleep(0.5)
        result = instance.query("SELECT * FROM test.postgresql_replica ORDER BY key;")

    cursor.execute("DROP TABLE postgresql_replica;")
    postgresql_replica_check_result(result, True)


@pytest.mark.timeout(320)
def test_many_replication_messages(started_cluster):
    conn = get_postgres_conn(
        ip=started_cluster.postgres_ip,
        port=started_cluster.postgres_port,
        database=True,
    )
    cursor = conn.cursor()
    create_postgres_table(cursor, "postgresql_replica")
    instance.query(
        "INSERT INTO postgres_database.postgresql_replica SELECT number, number from numbers(100000)"
    )

    instance.query("DROP TABLE IF EXISTS test.postgresql_replica")
    create_materialized_table(
        ip=started_cluster.postgres_ip, port=started_cluster.postgres_port
    )

    result = instance.query("SELECT count() FROM test.postgresql_replica;")
    while int(result) != 100000:
        time.sleep(0.2)
        result = instance.query("SELECT count() FROM test.postgresql_replica;")
    print("SYNC OK")

    instance.query(
        "INSERT INTO postgres_database.postgresql_replica SELECT number, number from numbers(100000, 100000)"
    )

    result = instance.query("SELECT count() FROM test.postgresql_replica;")
    while int(result) != 200000:
        time.sleep(1)
        result = instance.query("SELECT count() FROM test.postgresql_replica;")
    print("INSERT OK")

    result = instance.query("SELECT key FROM test.postgresql_replica ORDER BY key;")
    expected = instance.query("SELECT number from numbers(200000)")
    assert result == expected

    cursor.execute("UPDATE postgresql_replica SET value = key + 1 WHERE key < 100000;")

    result = instance.query(
        "SELECT key FROM test.postgresql_replica WHERE value = key + 1 ORDER BY key;"
    )
    expected = instance.query("SELECT number from numbers(100000)")

    while result != expected:
        time.sleep(1)
        result = instance.query(
            "SELECT key FROM test.postgresql_replica WHERE value = key + 1 ORDER BY key;"
        )
    print("UPDATE OK")

    cursor.execute("DELETE FROM postgresql_replica WHERE key % 2 = 1;")
    cursor.execute("DELETE FROM postgresql_replica WHERE key != value;")

    result = instance.query(
        "SELECT count() FROM (SELECT * FROM test.postgresql_replica);"
    )
    while int(result) != 50000:
        time.sleep(1)
        result = instance.query(
            "SELECT count() FROM (SELECT * FROM test.postgresql_replica);"
        )
    print("DELETE OK")

    cursor.execute("DROP TABLE postgresql_replica;")


@pytest.mark.timeout(320)
def test_connection_loss(started_cluster):
    conn = get_postgres_conn(
        ip=started_cluster.postgres_ip,
        port=started_cluster.postgres_port,
        database=True,
    )
    cursor = conn.cursor()
    create_postgres_table(cursor, "postgresql_replica")
    instance.query(
        "INSERT INTO postgres_database.postgresql_replica SELECT number, number from numbers(50)"
    )

    instance.query("DROP TABLE IF EXISTS test.postgresql_replica")
    create_materialized_table(
        ip=started_cluster.postgres_ip, port=started_cluster.postgres_port
    )

    i = 50
    while i < 100000:
        instance.query(
            "INSERT INTO postgres_database.postgresql_replica SELECT {} + number, number from numbers(10000)".format(
                i
            )
        )
        i += 10000

    started_cluster.pause_container("postgres1")

    result = instance.query("SELECT count() FROM test.postgresql_replica;")
    print(int(result))
    time.sleep(6)

    started_cluster.unpause_container("postgres1")

    result = instance.query("SELECT count() FROM test.postgresql_replica;")
    while int(result) < 100050:
        time.sleep(1)
        result = instance.query("SELECT count() FROM test.postgresql_replica;")

    cursor.execute("DROP TABLE postgresql_replica;")
    assert int(result) == 100050


@pytest.mark.timeout(320)
def test_clickhouse_restart(started_cluster):
    conn = get_postgres_conn(
        ip=started_cluster.postgres_ip,
        port=started_cluster.postgres_port,
        database=True,
    )
    cursor = conn.cursor()
    create_postgres_table(cursor, "postgresql_replica")
    instance.query(
        "INSERT INTO postgres_database.postgresql_replica SELECT number, number from numbers(50)"
    )

    instance.query("DROP TABLE IF EXISTS test.postgresql_replica")
    create_materialized_table(
        ip=started_cluster.postgres_ip, port=started_cluster.postgres_port
    )

    i = 50
    while i < 100000:
        instance.query(
            "INSERT INTO postgres_database.postgresql_replica SELECT {} + number, number from numbers(10000)".format(
                i
            )
        )
        i += 10000

    instance.restart_clickhouse()

    result = instance.query("SELECT count() FROM test.postgresql_replica;")
    while int(result) < 100050:
        time.sleep(1)
        result = instance.query("SELECT count() FROM test.postgresql_replica;")

    cursor.execute("DROP TABLE postgresql_replica;")
    print(result)
    assert int(result) == 100050


def test_rename_table(started_cluster):
    conn = get_postgres_conn(
        ip=started_cluster.postgres_ip,
        port=started_cluster.postgres_port,
        database=True,
    )
    cursor = conn.cursor()
    create_postgres_table(cursor, "postgresql_replica")

    instance.query("DROP TABLE IF EXISTS test.postgresql_replica")
    create_materialized_table(
        ip=started_cluster.postgres_ip, port=started_cluster.postgres_port
    )

    instance.query(
        "INSERT INTO postgres_database.postgresql_replica SELECT number, number from numbers(25)"
    )

    result = instance.query("SELECT count() FROM test.postgresql_replica;")
    while int(result) != 25:
        time.sleep(0.5)
        result = instance.query("SELECT count() FROM test.postgresql_replica;")

    instance.query(
        "RENAME TABLE test.postgresql_replica TO test.postgresql_replica_renamed"
    )
    assert (
        int(instance.query("SELECT count() FROM test.postgresql_replica_renamed;"))
        == 25
    )

    instance.query(
        "INSERT INTO postgres_database.postgresql_replica SELECT number, number from numbers(25, 25)"
    )

    result = instance.query("SELECT count() FROM test.postgresql_replica_renamed;")
    while int(result) != 50:
        time.sleep(0.5)
        result = instance.query("SELECT count() FROM test.postgresql_replica_renamed;")

    result = instance.query(
        "SELECT * FROM test.postgresql_replica_renamed ORDER BY key;"
    )
    postgresql_replica_check_result(result, True)
    cursor.execute("DROP TABLE postgresql_replica;")
    instance.query("DROP TABLE IF EXISTS test.postgresql_replica_renamed")


def test_virtual_columns(started_cluster):
    conn = get_postgres_conn(
        ip=started_cluster.postgres_ip,
        port=started_cluster.postgres_port,
        database=True,
    )
    cursor = conn.cursor()
    create_postgres_table(cursor, "postgresql_replica")

    instance.query("DROP TABLE IF EXISTS test.postgresql_replica")
    create_materialized_table(
        ip=started_cluster.postgres_ip, port=started_cluster.postgres_port
    )

    instance.query(
        "INSERT INTO postgres_database.postgresql_replica SELECT number, number from numbers(10)"
    )
    result = instance.query("SELECT count() FROM test.postgresql_replica;")
    while int(result) != 10:
        time.sleep(0.5)
        result = instance.query("SELECT count() FROM test.postgresql_replica;")

    # just check that it works, no check with `expected` becuase _version is taken as LSN, which will be different each time.
    result = instance.query(
        "SELECT key, value, _sign, _version FROM test.postgresql_replica;"
    )
    print(result)
    cursor.execute("DROP TABLE postgresql_replica;")


def test_abrupt_connection_loss_while_heavy_replication(started_cluster):
    instance.query("DROP DATABASE IF EXISTS test_database")
    conn = get_postgres_conn(
        ip=started_cluster.postgres_ip,
        port=started_cluster.postgres_port,
        database=True,
    )
    cursor = conn.cursor()
    table_name = "postgresql_replica"
    create_postgres_table(cursor, table_name)

    instance.query(f"DROP TABLE IF EXISTS test.{table_name}")
    create_materialized_table(
        ip=started_cluster.postgres_ip, port=started_cluster.postgres_port
    )

    for i in range(len(queries)):
        query = queries[i].format(table_name)
        cursor.execute(query)
        print("query {}".format(query.format(table_name)))

    started_cluster.pause_container("postgres1")

    result = instance.query("SELECT count() FROM test.postgresql_replica")
    print(result)  # Just debug

    started_cluster.unpause_container("postgres1")

    check_tables_are_synchronized("postgresql_replica")

    result = instance.query("SELECT count() FROM test.postgresql_replica")
    print(result)  # Just debug


def test_abrupt_server_restart_while_heavy_replication(started_cluster):
    conn = get_postgres_conn(
        ip=started_cluster.postgres_ip,
        port=started_cluster.postgres_port,
        database=True,
    )
    cursor = conn.cursor()
    table_name = "postgresql_replica_697"
    create_postgres_table(cursor, table_name)

    instance.query(
        f"INSERT INTO postgres_database.{table_name} SELECT -1, 1"
    )
    instance.query(f"DROP TABLE IF EXISTS test.{table_name}")
    create_materialized_table(
        ip=started_cluster.postgres_ip, port=started_cluster.postgres_port, table_name=table_name
    )

    n = 1
    while int(instance.query(f"select count() from test.{table_name}")) != 1:
        sleep(1)
        n += 1
        if n > 10:
            break;

    for query in queries:
        cursor.execute(query.format(table_name))
        print("query {}".format(query.format(table_name)))

    instance.restart_clickhouse()

    result = instance.query(f"SELECT count() FROM test.{table_name}")
    print(result)  # Just debug

    check_tables_are_synchronized(table_name)

    result = instance.query(f"SELECT count() FROM test.{table_name}")
    print(result)  # Just debug


def test_drop_table_immediately(started_cluster):
    conn = get_postgres_conn(
        ip=started_cluster.postgres_ip,
        port=started_cluster.postgres_port,
        database=True,
    )
    cursor = conn.cursor()
    create_postgres_table(cursor, "postgresql_replica")
    instance.query(
        "INSERT INTO postgres_database.postgresql_replica SELECT number, number from numbers(100000)"
    )

    instance.query("DROP TABLE IF EXISTS test.postgresql_replica")
    create_materialized_table(
        ip=started_cluster.postgres_ip, port=started_cluster.postgres_port
    )
    instance.query("DROP TABLE test.postgresql_replica")
    create_materialized_table(
        ip=started_cluster.postgres_ip, port=started_cluster.postgres_port
    )
    check_tables_are_synchronized("postgresql_replica")
    instance.query("DROP TABLE test.postgresql_replica")


if __name__ == "__main__":
    cluster.start()
    input("Cluster created, press any key to destroy...")
    cluster.shutdown()