Ordinary database engine is deprecated but there is no simple mean to change database engine to Atomic for existing databases.

Possible options:
- ALTER DATABASE MODIFY ENGINE query.
- Flag that triggers migration at ClickHouse startup.

The latter should be easier to implement. 

}
        else
        {
            
            if (ptrace(PTRACE_TRACEME, 0, nullptr, nullptr) == -1)
            {
                
                global_context->addWarningMessage(
                    fmt::format("Server is run under debugger and its binary image is modified (most likely with breakpoints).",
                    calculated_binary_hash)
                );
            }
            else
            {
                throw Exception(ErrorCodes::CORRUPTED_DATA,
                    "Calculated checksum of the executable ({0}) does not correspond"
                    " to the reference checksum stored in the executable ({1})."
                    " This may indicate one of the following:"
                    " - the executable {2} was changed just after startup;"
                    " - the executable {2} was corrupted on disk due to faulty hardware;"
                    " - the loaded executable was corrupted in memory due to faulty hardware;"
                    " - the file {2} was intentionally modified;"
                    " - a logical error in the code."
                    , calculated_binary_hash, stored_binary_hash, executable_path);
            }
        }
    }
    else
        executable_path = "/usr/bin/clickhouse";