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# ask-community
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Daniel Kontorovskyi

06/15/2023, 4:42 PM
👋 everyone! Trying to understand if my use-case can be solved with Dagster 🙏 I need to build a ETL pipeline. ETL pipeline needs to be generalistic. Based on the input some of the paths will should never execute and not be waited in the fan-in op later on. Each path should have a sequential execution of collector op and then transformation. Only then it should be get to fan-in where there would be post-calulaction based on all tranformations together. If this makes sense, have anyone knowledge if this can be done? Thanks 🤗
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owen

06/15/2023, 5:55 PM
Hi @Daniel Kontorovskyi! It sounds like you could accomplish this with dynamic outputs. The first op could emit a dynamic output for each path you want to execute, then be mapped to some graph of transformations. at the end, you can collect all of the outputs into a single list, and pass that into a single post-calculation op.
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