<div dir="ltr"><div dir="ltr"><br></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
A much simpler way to do it is to have a server switch to enable<br>
new features. <br>
It is less flexible, of course, because you can't have old and new<br>
clients, but do you really want to have old and new clients?</blockquote></div><div><br></div><div>I do agree with Kostya, I think it's a good compromise. In my humble opinion, the extended error feature in its current state is not worth the complexity and overhead it adds. Instead, why not introduce a Tarantool setting to choose whether you want to deal with a legacy or extended error response type (and it's very unlikely that someone will need to have 2 types at the same time). By default this setting will be set to use the legacy mode, then after N minor 2.x releases, it can be changed to use the new error type, the setting itself will be marked as deprecated and removed in the next major release. From a connector's point of view, it will also be easy to check if there are any additional fields in the response body, which would mean that the connector has received a "new" error.</div><br>-- <br><div dir="ltr" class="gmail_signature">Thank you and best regards,<br>Eugene Leonovich</div></div>