Re: [question] IOTDB-528，different sampling intervals

[Xiangdong Huang <sa...@gmail.com>]

Hi,

> <1h: no sampling
1h~1d : intervals = 1m
1d~30d:intervals = 1h
>30d：intervals = 1d

Looks ok to me.

> Maybe adding a parameter in config to let users decide whether to enable
down sampling is better.

Of course. If there is no such a switch, some users may think the data is
error.

Besides, we can also add a parameter to let users define which aggregation
function to use to downsampling the data, e.g., agv, max, min, random,
first, last, etc..

Any suggestion? @Julian Feinauer <j....@pragmaticminds.de>

Best,
-----------------------------------
Xiangdong Huang
School of Software, Tsinghua University

 黄向东
清华大学 软件学院


Jialin Qiao <qj...@mails.tsinghua.edu.cn> 于2020年4月17日周五 下午8:55写道：

> Hi,
>
> This is a good improvement to our grafana connector :)
>
> Maybe adding a parameter in config to let users decide whether to enable
> down sampling is better. (It can be enabled by default)
>
> Thanks,
> --
> Jialin Qiao
> School of Software, Tsinghua University
>
> 乔嘉林
> 清华大学 软件学院
>
> > -----原始邮件-----
> > 发件人: "阮同学" <sa...@126.com>
> > 发送时间: 2020-04-17 19:51:07 (星期五)
> > 收件人: dev <de...@iotdb.apache.org>
> > 抄送:
> > 主题: [question] IOTDB-528，different sampling intervals
> >
> > Hi,
> >
> > In issues 528[1]Implicitly do Group By （Down sample） to avoid sending to
> many data over the wire.At present, I plan to use different sampling
> intervals for different query ranges
> >
> >
> > <1h: no sampling
> > 1h~1d : intervals = 1m
> > 1d~30d:intervals = 1h
> > >30d：intervals = 1d
> >
> >
> > Does anyone have any better Suggestions?
> >
> > [1]https://issues.apache.org/jira/browse/IOTDB-528
> >
> > Best,
> > -----------------------------------
> > Sail
> >
> >
> >
> >
>