Use Spark Interims to Troubleshoot and Polish Low-Code Spark Pipelines: Part 2
In Part 1 we learned an easy way to troubleshoot a data pipeline using historical read-only metadata. Now I want to dig in and polish my individual spark dataframes (or RDDs). Here I have disabled column pruning temporarily so we can sample the data output from each dataframe.
Let's see how the data pipeline could be improved. Interims show me some sample data for each step of my pipeline. Let's iterate
Now I understand how my individual dataframes behave and I’m happy with my pipeline. As usual, I can view my pySpark code changes and push them to my git repo.
Interim data sampling makes my troubleshooting easier - I can conceptualize the visual flow, compare historical runs (see Part 1 of this blog), and inspect individual dataframes ALL in a low-code interface for Spark. Finally, spark has a visual IDE!
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