You are viewing a plain text version of this content. The canonical link for it is here.

Posted to dev@iotdb.apache.org by "Xiangdong Huang (Jira)" <ji...@apache.org> on 2020/03/01 14:08:00 UTC

[jira] [Commented] (IOTDB-528) [GRAFANA] Implicitly do GROUP BY to avoid sending to many data over the wire

    [ https://issues.apache.org/jira/browse/IOTDB-528?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17048574#comment-17048574 ] 

Xiangdong Huang commented on IOTDB-528:
---------------------------------------

Hi,
 
It seems SimpleJSON does not support aggregation push-down[1]. 
 
Actually, we need a better Grafana connector implementation to solve this problem.
 
 
[1] [https://grafana.com/grafana/plugins/grafana-simple-json-datasource]
 

> [GRAFANA] Implicitly do GROUP BY to avoid sending to many data over the wire
> ----------------------------------------------------------------------------
>
>                 Key: IOTDB-528
>                 URL: https://issues.apache.org/jira/browse/IOTDB-528
>             Project: Apache IoTDB
>          Issue Type: Improvement
>          Components: Connectors/Grafana
>            Reporter: Julian Feinauer
>            Priority: Major
>              Labels: performance
>
> When using itodb-grafana integration through SimpleJson it seems like it does not do any aggregation at all.
> In situations where one selects a big time range it should do some subsampling with group by to limit the number of rows being sent.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)