bigtable: TestIntegration_ConditionalMutations failed

[flaky-bot]

Note: #10855 was also for this test, but it was closed more than 10 days ago. So, I didn't mark it flaky.

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commit: a694e11
buildURL: Build Status, Sponge
status: failed

[flaky-bot]

Looks like this issue is flaky. 😟

I'm going to leave this open and stop commenting.

A human should fix and close this.

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When run at the same commit (a694e11), this test passed in one build (Build Status, Sponge) and failed in another build (Build Status, Sponge).

[bhshkh]

Error from logs:

=== RUN   TestIntegration_ConditionalMutations
    integration_test.go:4417: Running test against production
    retry.go:49: Fatal failure after 2 attempts:
        integration_test.go:4553: rpc error: code = AlreadyExists desc = Cannot create existing family follows
        retry.go:112: rpc error: code = AlreadyExists desc = Cannot create existing family follows
    integration_test.go:187: Mutating row "j§adams": rpc error: code = NotFound desc = Error while mutating the row 'j\302\247adams' (projects/dulcet-port-762/instances/gc-bt-it-instance/tables/cbt-test-1737739226383752817-01) : Requested column family not found.
--- FAIL: TestIntegration_ConditionalMutations (103.23s)