Here's diff for the fixed and rebased patch. There're some unexpected
things concerned with the check of emptiness of destination table:
internals can only correctly deal with ABORT conflict action and also my
'small optimization of optimization' was incorrect.

пн, 16 июл. 2018 г. в 16:20, Nikita Tatunov <hollow653@gmail.com>:

>
> пн, 16 июл. 2018 г. в 16:06, n.pettik <korablev@tarantool.org>:
>
>> Could you please rebase patch on fresh 2.0?
>> After that, I will give final assessment.
>>
>>
> Yes, no problem.
>
>
>> Also, did you manage to check that xfer optimisation really works at
>> runtime?
>>
>
> Yes, I have it in newer tests and involved an int variable on this
> purpose. Only need to make small fixes in it.
>