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e640bc7dba
test_creating_tenant_conf_after... - Test detaches a tenant and then re-attaches immediatel: this causes a race between pending remote LSN update and the generation bump in the attachment. test_gc_cutoff: - Test rapidly restarts a pageserver before one generation has had the chance to process deletions from the previous generation
48 lines
2.0 KiB
Python
48 lines
2.0 KiB
Python
import subprocess
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import pytest
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from fixtures.neon_fixtures import NeonEnvBuilder, PgBin
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# Test gc_cutoff
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#
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# This test sets fail point at the end of GC, and checks that pageserver
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# normally restarts after it. Also, there should be GC ERRORs in the log,
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# but the fixture checks the log for any unexpected ERRORs after every
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# test anyway, so it doesn't need any special attention here.
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@pytest.mark.timeout(600)
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def test_gc_cutoff(neon_env_builder: NeonEnvBuilder, pg_bin: PgBin):
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env = neon_env_builder.init_start(
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initial_tenant_conf={
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"gc_period": "10 s",
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"gc_horizon": f"{1024 ** 2}",
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"checkpoint_distance": f"{1024 ** 2}",
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"compaction_period": "5 s",
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# set PITR interval to be small, so we can do GC
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"pitr_interval": "1 s",
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"compaction_threshold": "3",
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"image_creation_threshold": "2",
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}
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)
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pageserver_http = env.pageserver.http_client()
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# Use aggressive GC and checkpoint settings, so that we also exercise GC during the test
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tenant_id = env.initial_tenant
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endpoint = env.endpoints.create_start("main", tenant_id=tenant_id)
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connstr = endpoint.connstr(options="-csynchronous_commit=off")
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pg_bin.run_capture(["pgbench", "-i", "-s10", connstr])
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pageserver_http.configure_failpoints(("after-timeline-gc-removed-layers", "exit"))
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# Because this test does a rapid series of restarts of the same node, it's possible that
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# we are restarted again before we can clean up deletion lists form the previous generation,
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# resulting in a subsequent startup logging a warning.
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env.pageserver.allowed_errors.append(".*Dropping stale deletions for tenant.*")
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for _ in range(5):
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with pytest.raises(subprocess.SubprocessError):
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pg_bin.run_capture(["pgbench", "-P1", "-N", "-c5", "-T500", "-Mprepared", connstr])
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env.pageserver.stop()
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env.pageserver.start(extra_env_vars={"FAILPOINTS": "after-timeline-gc-removed-layers=exit"})
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