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Refreshing pre-aggregations

Pre-aggregation refresh is the process of building pre-aggregations and updating them with new data. Pre-aggregation refresh is the responsibility of the refresh worker.

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Configuration

You can use the following environment variables to configure the refresh worker behavior:

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Troubleshooting

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Refresh scheduler interval error

Sometimes, you might come across the following error: 
{
  "message": "Refresh Scheduler Interval Error",
  "error": "Previous interval #2 was not finished with 60000 interval"
}
It indicates that your refresh worker is overloaded. You probably have a lot of tenants, a lot of pre-aggregations to refresh, or both. If you’re using multitenancy, you’d need to deploy several Cube clusters (each one per a reduced set of tenants) so there will be multiple refresh workers which will work only on a subset of your tenants. If you’re using Cube Cloud, you can use a production multi-cluster that would automatically do this for you.