Gleb Mezhanskiy, founder and CEO of Datafold, shares a personal experience from his previous role as a data engineer at Lyft to illustrate how internal code changes break data.
“In my years of data engineer at Lyft, I was unlucky to break down, well, actually blow up the entire data platform by making a three line SQL code hotfix that filtered a little bit more rights than I anticipated.”
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Insight
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Gleb MezhanskiySep 12, 2022▶ 5:45A Novel Approach to Data Quality for the Modern Data Stack | Datafold’s Gleb Mezhanskiy
Insight
Gleb Mezhanskiy: Data testing gives better signal-to-noise than data monitoring
“The signal to noise in data testing typically tends to be better because we define exactly what is wrong, what is right, versus in monitoring, it's Quite noisy, because we just, it just tells us when data doesn't conform to the historical properties, which doe…”
Gleb MezhanskiySep 12, 2022▶ 5:59A Novel Approach to Data Quality for the Modern Data Stack | Datafold’s Gleb Mezhanskiy
AssertionNot publicly verifiable
Mezhanskiy: Datafold's data-diff benchmarks over 1B rows in 5 minutes
“We run some benchmarks, and you can run this on like a twenty-five million row data set in less than 10 seconds, An over one billion row dataset in about five minutes.”
Gleb MezhanskiySep 12, 2022▶ 16:37A Novel Approach to Data Quality for the Modern Data Stack | Datafold’s Gleb Mezhanskiy
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