Can transforms drop certain groups?

[Xavier_Marti_Bofill]

Is it possible to instruct a transform to ignore certain groups based on some aggregation results?
Say we have an ecommerce and we want to track the time-to-buy, grouped by session-id. We have records for first access and for actual sale.
Most users don't end up buying, and I don't want my new index to be full of null values.

[Hendrik_Muhs]

Hi,

transforms can feed into an ingest pipeline, you can use the drop processor to prevent documents from getting indexed based on a condition, e.g. a field value.

Hope that helps.

[Xavier_Marti_Bofill]

Got it, thanks!