Thank you guys for your comments, Anton i understand your proposal but i
believe that highlighted case is rare and data safety is preferred. I fill the
ticket [1].
[1] https://issues.apache.org/jira/browse/IGNITE-12725
>
>
>------- Forwarded message -------
>From: "Anton Vinogradov" < a...@apache.org >
>To: dev@ignite.apache.org
>Cc: "Zhenya Stanilovsky" < arzamas...@mail.ru >
>Subject: Re: Excessive backups performance suggestion.
>Date: Thu, 06 Feb 2020 14:11:50 +0300
>
>>> most users do not want to lose data by default.
>But some ready to sacrifice.
>
>I know at least one case when "pure speed without insurance" required when
>the ML model is studying.
>
>On Thu, Feb 6, 2020 at 1:39 PM Alexei Scherbakov <
>alexey.scherbak...@gmail.com > wrote:
>
>> I'm quite sure most users do not want to lose data by default.
>>
>> It's not wise to recommend such thing even with explicit warning.
>>
>> чт, 6 февр. 2020 г. в 13:30, Anton Vinogradov < a...@apache.org >:
>>
>> > The statement seems to be correct for cases when we'd like to perform
>> fast
>> > loading and computation and not afraid of data loss.
>> > Performance boost always means we lose some guarantee.
>> > Let's just update the proposal with the explicit warning that reducing
>> > backups to zero may lead to data loss on any node failure.
>> >
>> > On Thu, Feb 6, 2020 at 1:09 PM Alexei Scherbakov <
>> > alexey.scherbak...@gmail.com > wrote:
>> >
>> > > Definitely wrong recommendation.
>> > > Please file a ticket for removal.
>> > >
>> > > чт, 6 февр. 2020 г. в 12:26, Zhenya Stanilovsky
>> > < arzamas...@mail.ru.invalid
>> > > >:
>> > >
>> > > >
>> > > > Igniters, i found that suggesting zero backup for performance
>> > > improvements
>> > > > sounds like malicious and further problems suggestion. May be it`s
>> time
>> > > to
>> > > > remove it ?
>> > > >
>> > > > Example:
>> > > > [07:59:27] Performance suggestions for grid (fix if possible)
>> > > > [07:59:27] To disable, set
>> > -DIGNITE_PERFORMANCE_SUGGESTIONS_DISABLED=true
>> > > > [07:59:27] ^-- Decrease number of backups (set 'backups' to 0)
>> > > >
>> > > >
>> > >
>> > >
>> > >
>> > > --
>> > >
>> > > Best regards,
>> > > Alexei Scherbakov
>> > >
>> >
>>
>>
>> --
>>
>> Best regards,
>> Alexei Scherbakov
