AssertStartupRetry is called by dist sender and internal sql executor to ensure that server startup is always performing retry of kv operations.

Begin ensures that startup detection is correctly identifying startup stack and initializing internal assertions for tests.

IsRetryableReplicaError returns true for replica availability errors.

RunIdempotentWithRetry synchronously runs a function with retry of circuit breaker errors on startup.

RunIdempotentWithRetryEx run function returning value with startup retry.

WithoutChecks adds startup tag to context to allow kv and sql executor access from startup path without wrapping methods in RunIdempotentWithRetry*.