Build a flow

[Parunyu]

How it different between build upstream only modify and build all upstream. In the lesson it tells that build only modify is different only time, but I need to know that there is any point that are different or not ?

[SeanA · Accepted solution]

Hi @Parunyu , I believe you are referring to this lesson (https://knowledge.dataiku.com/latest/data-preparation/pipelines/concept-dataset-build-modes.html) and have a question about the difference between the build modes build upstream (only modified) and build all upstream.

Build all upstream is a forced recursive build. No matter whether a dependent dataset is up to date or not, it will recompute all dependencies. Build upstream (only modified), which is the default, will take into account whether a dependent dataset is out of date or not. It won't recompute what doesn't need to be recomputed. So often this option can save computation time.

[Parunyu]

@SeanA Understand it! Thanks a lots.