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From Dmitriy Setrakyan <dsetrak...@apache.org>
Subject Re: one point optimisation
Date Mon, 03 Apr 2017 16:02:42 GMT
Aleksey,

The blog describes the 1-phase commit at a high level, but I am still
curious about the differences you found. Can you share them here?

D.

On Mon, Apr 3, 2017 at 2:11 AM, ALEKSEY KUZNETSOV <alkuznetsov.sb@gmail.com>
wrote:

> Regarding IgniteOnePhaseCommitNearSelfTest test , ignite's one phase
> optimisation works not as you said.
> I attached picture of message exchange. There are partial prepare phase
> exists, along with finish phase.
>
>
>
> пн, 3 апр. 2017 г. в 10:55, Christos Erotocritou <christos@gridgain.com>:
>
>> As far as I know a partition is always allocated to a specific node and
>> does not span nodes. Ignite has default 1024 partitions on start that are
>> split equally across nodes.
>>
>> > On 3 Apr 2017, at 08:10, ALEKSEY KUZNETSOV <alkuznetsov.sb@gmail.com>
>> wrote:
>> >
>> > in ur blog u texted belonging to the same partition is nessesary for 1
>> > phase commit. But its not guarantee belonging to the same node.
>> Partition
>> > may span many nodes
>> >
>> > вс, 2 Апр 2017 г., 13:46 ALEKSEY KUZNETSOV <alkuznetsov.sb@gmail.com>:
>> >
>> >> thank u !
>> >>
>> >> пт, 31 Мар 2017 г., 21:06 Denis Magda <dmagda@apache.org>:
>> >>
>> >> Here is a good blog post about 1phase commit impl in Ignite and its
>> >> advantages:
>> >>
>> >> http://gridgain.blogspot.com/2014/09/one-phase-commit-fast-
>> transactions-for.html
>> >> <
>> >> http://gridgain.blogspot.com/2014/09/one-phase-commit-fast-
>> transactions-for.html
>> >>>
>> >>
>> >> Took a reference to it from there:
>> >>
>> >> https://apacheignite.readme.io/docs/transactions#section-
>> two-phase-commit-2pc
>> >> <
>> >> https://apacheignite.readme.io/docs/transactions#section-
>> two-phase-commit-2pc
>> >>>
>> >>
>> >> —
>> >> Denis
>> >>
>> >>> On Mar 31, 2017, at 12:27 PM, Dmitriy Setrakyan <
>> dsetrakyan@apache.org>
>> >> wrote:
>> >>>
>> >>> On Fri, Mar 31, 2017 at 9:25 AM, ALEKSEY KUZNETSOV <
>> >> alkuznetsov.sb@gmail.com
>> >>>> wrote:
>> >>>
>> >>>> Igniters! What is the point of one phase optimisation?
>> >>>>
>> >>>
>> >>> Performance
>> >>
>> >> --
>> >>
>> >> *Best Regards,*
>> >>
>> >> *Kuznetsov Aleksey*
>> >>
>> > --
>> >
>> > *Best Regards,*
>> >
>> > *Kuznetsov Aleksey*
>>
> --
>
> *Best Regards,*
>
> *Kuznetsov Aleksey*
>

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