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Posted to notifications@iotdb.apache.org by "Houliang Qi (Jira)" <ji...@apache.org> on 2021/01/12 07:37:00 UTC
[jira] [Commented] (IOTDB-910) Support time range interval query of
metadata(timeseries,devices) and so on
[ https://issues.apache.org/jira/browse/IOTDB-910?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17263128#comment-17263128 ]
Houliang Qi commented on IOTDB-910:
-----------------------------------
one solution is to add the create/update time in the tags of the timeseries, when we create timeseries or update timeseries, we can change the create/update time in the tags. in other words, we can add two default tags with the timeseries, that is create time and update time.
further on, how about adding one map<String, Object> in every MNode, then we can add create time and update time in the device node.
> Support time range interval query of metadata(timeseries,devices) and so on
> ---------------------------------------------------------------------------
>
> Key: IOTDB-910
> URL: https://issues.apache.org/jira/browse/IOTDB-910
> Project: Apache IoTDB
> Issue Type: New Feature
> Components: Core/Engine
> Reporter: Houliang Qi
> Priority: Major
>
> Maybe we can treate the metadata(timeseries) as special data like the timeseries's values. and support metadata query like data query.
> One way to do this is to add the metadata to one metadata_table, like the information_schema.tables of mysql.
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Re: [jira] [Commented] (IOTDB-910) Support time range interval query
of metadata(timeseries,devices) and so on
Posted by Xiangdong Huang <sa...@gmail.com>.
I know a PhD student is doing some similar thing. Maybe we can have a
discussion.
@赵鑫, if you want to contribute your idea and work to the open source
community, do not miss this.
If you just consider the achievement as a non open source research, it is
fine.
Best,
-----------------------------------
Xiangdong Huang
School of Software, Tsinghua University
黄向东
清华大学 软件学院
Houliang Qi (Jira) <ji...@apache.org> 于2021年1月12日周二 下午3:37写道：
>
> [
> https://issues.apache.org/jira/browse/IOTDB-910?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17263128#comment-17263128
> ]
>
> Houliang Qi commented on IOTDB-910:
> -----------------------------------
>
> one solution is to add the create/update time in the tags of the
> timeseries, when we create timeseries or update timeseries, we can change
> the create/update time in the tags. in other words, we can add two default
> tags with the timeseries, that is create time and update time.
>
>
>
> further on, how about adding one map<String, Object> in every MNode, then
> we can add create time and update time in the device node.
>
>
>
> > Support time range interval query of metadata(timeseries,devices) and so
> on
> >
> ---------------------------------------------------------------------------
> >
> > Key: IOTDB-910
> > URL: https://issues.apache.org/jira/browse/IOTDB-910
> > Project: Apache IoTDB
> > Issue Type: New Feature
> > Components: Core/Engine
> > Reporter: Houliang Qi
> > Priority: Major
> >
> > Maybe we can treate the metadata(timeseries) as special data like the
> timeseries's values. and support metadata query like data query.
> > One way to do this is to add the metadata to one metadata_table, like
> the information_schema.tables of mysql.
>
>
>
> --
> This message was sent by Atlassian Jira
> (v8.3.4#803005)
>