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test_runner: use LFC by default (#8613)

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## Problem
LFC is not enabled by default in tests, but it is enabled in production.
This increases the risk of errors in the production environment, which
were not found during the routine workflow.
However, enabling LFC for all the tests may overload the disk on our
servers and increase the number of failures.
So, we try enabling  LFC in one case to evaluate the possible risk.

## Summary of changes
A new environment variable, USE_LFC is introduced. If it is set to true,
LFC is enabled by default in all the tests.
In our workflow, we enable LFC for PG17, release, x86-64, and disabled
for all other combinations.

---------

Co-authored-by: Alexey Masterov <alexeymasterov@neon.tech>
Co-authored-by: a-masterov <72613290+a-masterov@users.noreply.github.com>
This commit is contained in:
Alexander Bayandin
2024-11-25 09:01:05 +00:00
committed by GitHub
parent 450be26bbb
commit 6f7aeaa1c5
20 changed files with 158 additions and 49 deletions
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2
test_runner/fixtures/workload.py
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@@ -193,7 +193,7 @@ class Workload:
def validate(self, pageserver_id: int | None = None):
endpoint = self.endpoint(pageserver_id)
endpoint.clear_shared_buffers()
endpoint.clear_buffers()
result = endpoint.safe_psql(f"SELECT COUNT(*) FROM {self.table}")
log.info(f"validate({self.expect_rows}): {result}")