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https://issues.apache.org/jira/browse/COMDEV-355?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiangdong Huang closed COMDEV-355.
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Resolution: Invalid
According to [1], I should open this issue on IoTDB Jira track. So I close this
issue here.
[1] [http://community.apache.org/guide-to-being-a-mentor.html]
> Apache IoTDB trigger module for streaming cumputing
> ---------------------------------------------------
>
> Key: COMDEV-355
> URL: https://issues.apache.org/jira/browse/COMDEV-355
> Project: Community Development
> Issue Type: Wish
> Components: GSoC/Mentoring ideas
> Reporter: Xiangdong Huang
> Priority: Major
> Labels: IoTDB, gsoc2020
>
> 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:
> h...@apache.org
>
>
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