Excessive backups performance suggestion.
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
[jira] [Created] (IGNITE-12725) Excessive backups performance suggestion.
Stanilovsky Evgeny created IGNITE-12725: --- Summary: Excessive backups performance suggestion. Key: IGNITE-12725 URL: https://issues.apache.org/jira/browse/IGNITE-12725 Project: Ignite Issue Type: Improvement Components: general Affects Versions: 2.8 Reporter: Stanilovsky Evgeny Assignee: Stanilovsky Evgeny Fix For: 2.8.1 I found that performance suggestion for zeroing backups count is incorrect in terms of proper cluster exploitation and easy way to loose your data. Discussion in dev list [1]. I suggest simple remove this message. [1] http://apache-ignite-developers.2346864.n4.nabble.com/Excessive-backups-performance-suggestion-td45658.html -- This message was sent by Atlassian Jira (v8.3.4#803005)
Re: Excessive backups performance suggestion.
>> 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 : > > > 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 > > > > >: > > > > > > > > > > > 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 >
Re: Excessive backups performance suggestion.
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 : > 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 > > >: > > > > > > > > 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
Re: Excessive backups performance suggestion.
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 >: > > > > > 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 >
Re: Excessive backups performance suggestion.
Definitely wrong recommendation. Please file a ticket for removal. чт, 6 февр. 2020 г. в 12:26, Zhenya Stanilovsky : > > 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
Excessive backups performance suggestion.
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)
