On 7/27/20 11:22 AM, tsunakawa.takay@fujitsu.com wrote:
> Hi Andrey san, Movead san,
>
>
> From: tsunakawa.takay@fujitsu.com <tsunakawa.takay@fujitsu.com>
>> While Clock-SI seems to be considered the best promising for global
>> serializability here,
>>
>> * Why does Clock-SI gets so much attention? How did Clock-SI become the
>> only choice?
>>
>> * Clock-SI was devised in Microsoft Research. Does Microsoft or some other
>> organization use Clock-SI?
>
> Could you take a look at this patent? I'm afraid this is the Clock-SI for MVCC. Microsoft holds this until 2031. I
couldn'tfind this with the keyword "Clock-SI.""
>
>
> US8356007B2 - Distributed transaction management for database systems with multiversioning - Google Patents
> https://patents.google.com/patent/US8356007
>
>
> If it is, can we circumvent this patent?
>
>
> Regards
> Takayuki Tsunakawa
>
>
Thank you for the research (and previous links too).
I haven't seen this patent before. This should be carefully studied.
--
regards,
Andrey Lepikhov
Postgres Professional
