What Are Your Biggest Challenges When Working with ETL Pipelines? or How Do You Optimize Performance

Lol @ "the universe hating you." Too real.

For troubleshooting, I swear by Great Expectations—it lets you define "this data should look like X" rules, so you catch weird schema changes early.

Also, if your ETL pipelines are failing from locks, try batching inserts or using temp tables. Saved me so many headaches.