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https://github.com/neondatabase/neon.git
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Joonas Koivunen
8142edda01
Solves a flaky test error in the wild[^1] by: - Make the gc shutdown signal reading an `allowed_error` - Note the gc shutdown signal readings as being in `allowed_error`s - Allow passing tenant conf to init_start to avoid unncessary tenants [^1]: https://neon-github-public-dev.s3.amazonaws.com/reports/pr-4399/5176432780/index.html#suites/b97efae3a617afb71cb8142f5afa5224/2cd76021ea011f93
35 lines
1.2 KiB
Python
35 lines
1.2 KiB
Python
# This test spawns pgbench in a thread in the background and concurrently restarts pageserver,
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# checking how client is able to transparently restore connection to pageserver
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#
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import threading
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import time
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from fixtures.log_helper import log
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from fixtures.neon_fixtures import NeonEnv, PgBin
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# Test restarting page server, while safekeeper and compute node keep
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# running.
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def test_pageserver_restarts_under_worload(neon_simple_env: NeonEnv, pg_bin: PgBin):
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env = neon_simple_env
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env.neon_cli.create_branch("test_pageserver_restarts")
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endpoint = env.endpoints.create_start("test_pageserver_restarts")
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n_restarts = 10
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scale = 10
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def run_pgbench(connstr: str):
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log.info(f"Start a pgbench workload on pg {connstr}")
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pg_bin.run_capture(["pgbench", "-i", f"-s{scale}", connstr])
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pg_bin.run_capture(["pgbench", f"-T{n_restarts}", connstr])
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thread = threading.Thread(target=run_pgbench, args=(endpoint.connstr(),), daemon=True)
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thread.start()
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for i in range(n_restarts):
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# Stop the pageserver gracefully and restart it.
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time.sleep(1)
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env.pageserver.stop()
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env.pageserver.start()
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thread.join()
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