Advanced Designer Data Pipeline Build Mode

[MikeAries]

Hello, I am currently doing the Build Modes tutorial in the Data Pipeline training of the learning path advanced designer. I made it to the Build a Flow zone. However, at this level, when I arrive at step 3 "Click Preview", I am shown the following message:

Source dataset 'TUT_VISUAL_RECIPES.tx_joined' is not ready, can't build, caused by: DataStoreIOException: Root path of the dataset tx_joined does not exist
More information might be available in full log (Actions > View full job log)

Can you explain to me why the preview is not working? How to solve this problem ?

[SeanA]

Hi @MikeAries , I wasn't able to reproduce your error. I'd start with the error message. The root path of tx_joined does not exist. I'd open this dataset and see if it's there and move backward up the pipeline to see where the problem might begin.

Was this previous build successful? The "Build upstream" section also requires tx_joined and so I'm not sure how that build could be successful if tx_joined had a problem.

If I had to guess, you may have made an error in the initial step of clearing datasets?

[MikeAries]

Hi @SeanA . When I launch the tx_windows (NP) build, build upstream, review then run, it gives me the following error message:

Illegal URL
Failed to enumerate source { "useGlobalProxy": true, "providerType": "URL", "params": { "path": "https://downloads.dataiku.com/public/website-additional-assets/data/merchant_info .csv.zip", "consider404AsEmpty": true, "fallbackHeadToGet": true, "trustAnySSLCertificate": false } }, caused by: CodedIOException: in act.download_to_merchants_NP: URI is invalid, caused by: UnknownHostException: downloads.dataiku.com : Name or service not known
This error is typically caused by a configuration issue. You need to modify the affected settings to fix the issue.

[SeanA]

Hi @MikeAries when you open the merchants dataset, is there data there? I think you may have cleared it.  If that's the case, you'll need to recreate the project (+New Project > DSS tutorials > Advanced Designer > Build Modes).

[MikeAries]

Hi @SeanA . I found the Build Mode projects to download and I just figured something out. In fact, when I do the build upstream part of the tutorial and I preview the build upstream, I don't know why, but the download_to_merchants source is added below job preview with compute_cards_prepared, compute_tx_joined, compute_tx_prepared, compute_tx_windows.

[SeanA]

Hi @MikeAries , I think what's happening here is a bit subtle, but doesn't matter too much in the end. I also found download_to_merchants as an activity in the job preview for an upstream build. You'll notice on the right it says "This activity is required because it was never executed". When I do run it though, that activity takes 0 seconds. So it's not really re-computing this recipe. Then, when I clear the downstream datasets in the Flow, and do another upstream build preview, download_to_merchants is not an activity. Does that make sense? We'll try to make this a bit clearer.