Files
neon/test_runner/regress/test_gc_cutoff.py
Joonas Koivunen 368ee6c8ca refactor: failpoint support (#5033)
- move them to pageserver which is the only dependant on the crate fail
- "move" the exported macro to the new module
- support at init time the same failpoints as runtime

Found while debugging test failures and making tests more repeatable by
allowing "exit" from pageserver start via environment variables. Made
those changes to `test_gc_cutoff.py`.

---------

Co-authored-by: Christian Schwarz <christian@neon.tech>
2023-08-19 01:01:44 +03:00

43 lines
1.7 KiB
Python

import subprocess
import pytest
from fixtures.neon_fixtures import NeonEnvBuilder, PgBin
# Test gc_cutoff
#
# This test sets fail point at the end of GC, and checks that pageserver
# normally restarts after it. Also, there should be GC ERRORs in the log,
# but the fixture checks the log for any unexpected ERRORs after every
# test anyway, so it doesn't need any special attention here.
@pytest.mark.timeout(600)
def test_gc_cutoff(neon_env_builder: NeonEnvBuilder, pg_bin: PgBin):
env = neon_env_builder.init_start(
initial_tenant_conf={
"gc_period": "10 s",
"gc_horizon": f"{1024 ** 2}",
"checkpoint_distance": f"{1024 ** 2}",
"compaction_period": "5 s",
# set PITR interval to be small, so we can do GC
"pitr_interval": "1 s",
"compaction_threshold": "3",
"image_creation_threshold": "2",
}
)
pageserver_http = env.pageserver.http_client()
# Use aggressive GC and checkpoint settings, so that we also exercise GC during the test
tenant_id = env.initial_tenant
endpoint = env.endpoints.create_start("main", tenant_id=tenant_id)
connstr = endpoint.connstr(options="-csynchronous_commit=off")
pg_bin.run_capture(["pgbench", "-i", "-s10", connstr])
pageserver_http.configure_failpoints(("after-timeline-gc-removed-layers", "exit"))
for _ in range(5):
with pytest.raises(subprocess.SubprocessError):
pg_bin.run_capture(["pgbench", "-P1", "-N", "-c5", "-T500", "-Mprepared", connstr])
env.pageserver.stop()
env.pageserver.start(extra_env_vars={"FAILPOINTS": "after-timeline-gc-removed-layers=exit"})