[jira] [Commented] (IOTDB-516) Apache IoTDB trigger module for streaming cumputing

["Steve Yurong Su (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IOTDB-516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17068761#comment-17068761 ] 

Steve Yurong Su commented on IOTDB-516:
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Hi, I'd like to work on this!

Here is my proposal [https://docs.google.com/document/d/1qQf0dHvv91xfDJ34yGicp4bXxsYlbd8OOgtRkRfxKao/edit#heading=h.apxk8126u8c3]

> Apache IoTDB trigger module for streaming cumputing
> ---------------------------------------------------
>
>                 Key: IOTDB-516
>                 URL: https://issues.apache.org/jira/browse/IOTDB-516
>             Project: Apache IoTDB
>          Issue Type: Wish
>          Components: Core/Engine
>            Reporter: Xiangdong Huang
>            Priority: Major
>              Labels: IoTDB, gsoc2020, mentor
>
> IoTDB is a time-series data management system and the data usually comes in a streaming way.
> In the IoT area, when a data point comes, a trigger can be called because of the following scenario:
>  * (single data point calculation) the data point is an outlier point, or the data value reaches a warning threshold. IoTDB needs to publish the data point to those who subscribed the event.
>  * (multiply time series data point calculation) a device sends several metrics data to IoTDB, e.g., vehicle d1 sends average speed and running time to IoTDB. Then users may want to get the mileage of the vehicle (speed x time). IoTDB needs to calculate the result and save it to another time series.
>  * (Time window calculation) a device reports its temperature every second. Though the temperature is not too high, if it keeps increasing in 5 seconds, IoTDB needs to report the event to those who subscribe that.
>  
> As there are many streaming computing projects already, we can integrate one of them into IoTDB.
>  * If IoTDB runs on Edge, we can integrate Apache StreamPipes or Apache Edgent.
>  * If IOTDB runs on a Server, the above also works  and Apache Flink is also a good choice.
> The process is:
>  * User registers a trigger into IoTDB.
>  * When a data comes, IoTDB save it and check whether there are triggers on it
>  * If so, call a streaming computing framework to do something;
>  
> You may need to know:
>  * At least one streaming computing project.
>  * SQL parser or some other DSL parser tool.
> You have to modify the source codes of IoTDB server engine module.
> Difficulty: A little hard
> mentors:



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