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When you set up a query as an aggregation task, it will give you great performance when you use it to feed widgets in an Activeboard, and also Devo applications. This is because an aggregation task creates a background task that continually updates and aggregates the query's values. This way new data is more quickly reflected in the widget the aggregation task is feeding. There is a blue rocket icon on widgets that can be optimized using aggregation tasks.

What permission do I need?

To create and manage aggregation tasks you need to have the manage version of the Domain aggregation tasks permission. The view version allows you to see existing aggregation tasks but not to manage them or create new ones (know more about permissions here).

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Creating aggregation tasks

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Rw ui steps macro

Rw step Go to Data Search and run the query that generates the data you require for your widgets. Info Not with lookups To use aggregation tasks effectively, you must not create them using queries with lookups, otherwise, they might not work as expected. This is so because of technical reasons related to the interaction between the components behind them. Rw step Click the options menu in the toolbar and select New → Aggregation task. Info Group your data You must group your data to create an aggregation task. The option will be disabled if you didn’t or if you did it multiple times. Be aware that if you use a non-time-based grouping, you will not be able to later use the eventdate field in the aggregation task query. If you do, you will get an error message explaining this. Rw step The New aggregation task window appears. Enter the required information and click Create.  This table lists and describes the fields in this window.  NameRequired Enter a name for the aggregation task (max 1024 characters). Description Enter a description of the aggregation task (max 1024 characters). Tags Enter tags that help categorize the aggregation task. Build From Enter the date from which you want to start collecting data. Minimum grouping period Select how often you want data to be aggregated. Choose between 1 minute, 5 minutes, or 30 minutes or Auto (default option). In real time Check this option if you want data to be sent in real-time. If not checked, use the Delay field to specify the maximum acceptable time difference between the current time and the last event displayed. Rw step The system notifies you that generating the aggregation task from the aggregation task may take a few minutes. Click Yes. You will see a notification message once the aggregation task is generated. Info Limited number of aggregation tasks Since they have an impact on the overall system, Devo limits the number of active aggregation tasks per user so make sure you use them wisely.

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Administrator users can check all aggregation tasks and activate/deactivate them in the Aggregation Tasks tab of the Administration → Data Management area. Go to the Aggregation task article to learn more about this.

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