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Add retry to fetching basebackup (#6537)

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## Problem
Currently we have no retry mechanism for fetching basebackup. If there's
an unstable connection, starting compute will just fail.

## Summary of changes
Adds an exponential backoff with 7 retries to get the basebackup.
This commit is contained in:
Sasha Krassovsky
2024-02-01 11:50:04 -09:00
committed by GitHub
parent 3525080031
commit be30388901
2 changed files with 33 additions and 5 deletions
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8
test_runner/regress/test_bad_connection.py
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@@ -9,14 +9,14 @@ def test_compute_pageserver_connection_stress(neon_env_builder: NeonEnvBuilder):
env = neon_env_builder.init_start()
env.pageserver.allowed_errors.append(".*simulated connection error.*")
# Enable failpoint before starting everything else up so that we exercise the retry
# on fetching basebackup
pageserver_http = env.pageserver.http_client()
pageserver_http.configure_failpoints(("simulated-bad-compute-connection", "50%return(15)"))
env.neon_cli.create_branch("test_compute_pageserver_connection_stress")
endpoint = env.endpoints.create_start("test_compute_pageserver_connection_stress")
# Enable failpoint after starting everything else up so that loading initial
# basebackup doesn't fail
pageserver_http.configure_failpoints(("simulated-bad-compute-connection", "50%return(15)"))
pg_conn = endpoint.connect()
cur = pg_conn.cursor()