spyvip opened a new issue #2729: URL: https://github.com/apache/iotdb/issues/2729
**Is your feature request related to a problem? Please describe.** in some case, I want to store some business key in one point data, as I know, no framework has implement include influxdb, openTSDB and so on, but I found [nightingale](https://github.com/didi/nightingale) support **extra** field in [this api](https://n9e.didiyun.com/docs/api/data/) ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
