The validate command requires a collection X lock, which cannot be acquired if there are outstanding transactions running on the server. The rollback fuzzer may attempt to call RollbackTest#restartNode() after having started transactions on the server. The RollbackTest#restartNode() method should therefore take an optional skipValidation boolean and pass it through to the rst.stop() call.

The RollbackTest#transitionToSteadyStateOperations() method should also be updated to take an optional skipDataConsistencyChecks boolean (wrapped in an object so it's effectively a named parameter) that acts as a syntactic alternative to the usage of expectPreparedTxnsDuringRollback as a way to avoid calling checkDataConsistency().