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The Cognite Pi extractor is currently unable to fill gaps. The only way to force the extractor to re-pull gaps is to:
- turn the extractor off
- change the state table (update first = last)
- change extractor config to enable backfill
- turn extractor on
This isn't user friendly nor is it documented. It also usually requires an IT admin with access to the extractor's VM and a person who knows where it was installed. It would be amazing to get a no-code feature to do this same thing. Here are two use cases:
- As an SME i notice that I'm missing data points for a failure or process. I check my source system to verify that the points are missing in CDF. I go to the Extraction Pipeline that monitors this extractor and I enter a timeframe and tag that I wish to gap-fill.
- As an SME my use case has changed to require more historical data. I want to pull another year's worth of data for a subset of all my tags. I enter a list of tags and set it to backfill just those tags.
