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* Add yapf run to CircleCI * Pin yapf version * Enable `SPLIT_ALL_TOP_LEVEL_COMMA_SEPARATED_VALUES` setting * Reformat all existing code with slight manual adjustments * test_runner/README: note that yapf is forced
85 lines
2.8 KiB
Python
85 lines
2.8 KiB
Python
import pytest
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from contextlib import closing
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from fixtures.zenith_fixtures import ZenithPageserver, PostgresFactory
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from fixtures.log_helper import log
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pytest_plugins = ("fixtures.zenith_fixtures")
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#
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# Test restarting and recreating a postgres instance
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#
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@pytest.mark.parametrize('with_wal_acceptors', [False, True])
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def test_restart_compute(
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zenith_cli,
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pageserver: ZenithPageserver,
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postgres: PostgresFactory,
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pg_bin,
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wa_factory,
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with_wal_acceptors: bool,
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):
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wal_acceptor_connstrs = None
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zenith_cli.run(["branch", "test_restart_compute", "empty"])
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if with_wal_acceptors:
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wa_factory.start_n_new(3)
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wal_acceptor_connstrs = wa_factory.get_connstrs()
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pg = postgres.create_start('test_restart_compute', wal_acceptors=wal_acceptor_connstrs)
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log.info("postgres is running on 'test_restart_compute' branch")
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with closing(pg.connect()) as conn:
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with conn.cursor() as cur:
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cur.execute('CREATE TABLE t(key int primary key, value text)')
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cur.execute("INSERT INTO t SELECT generate_series(1,100000), 'payload'")
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cur.execute('SELECT sum(key) FROM t')
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r = cur.fetchone()
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assert r == (5000050000, )
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log.info(f"res = {r}")
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# Remove data directory and restart
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pg.stop_and_destroy().create_start('test_restart_compute', wal_acceptors=wal_acceptor_connstrs)
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with closing(pg.connect()) as conn:
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with conn.cursor() as cur:
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# We can still see the row
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cur.execute('SELECT sum(key) FROM t')
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r = cur.fetchone()
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assert r == (5000050000, )
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log.info(f"res = {r}")
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# Insert another row
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cur.execute("INSERT INTO t VALUES (100001, 'payload2')")
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cur.execute('SELECT count(*) FROM t')
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r = cur.fetchone()
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assert r == (100001, )
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log.info(f"res = {r}")
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# Again remove data directory and restart
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pg.stop_and_destroy().create_start('test_restart_compute', wal_acceptors=wal_acceptor_connstrs)
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# That select causes lots of FPI's and increases probability of wakeepers
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# lagging behind after query completion
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with closing(pg.connect()) as conn:
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with conn.cursor() as cur:
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# We can still see the rows
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cur.execute('SELECT count(*) FROM t')
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r = cur.fetchone()
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assert r == (100001, )
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log.info(f"res = {r}")
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# And again remove data directory and restart
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pg.stop_and_destroy().create_start('test_restart_compute', wal_acceptors=wal_acceptor_connstrs)
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with closing(pg.connect()) as conn:
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with conn.cursor() as cur:
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# We can still see the rows
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cur.execute('SELECT count(*) FROM t')
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r = cur.fetchone()
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assert r == (100001, )
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log.info(f"res = {r}")
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