~/talks

Igor Khrol

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titleconferencedate
Big Data With Open Source SolutionsBig Data Conference Europe 20232023-11-22
Automattic runs a Hadoop HDFS backed data lake on bare metal with Spark for ETL, Trino for low‑latency SQL, Yarn as the cluster resource manager, Airflow…
Talk on
How to Test BigData/ETL Solutions?TestCon Europe 20232023-10-25
Claims that table-heavy ETL is best tested by Cucumber table tests with fast unit checks and SQL formatting via IntelliJ, that pipelines run as Airflow DAGs…
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BOF: SDET – yet another rattle title or separate engineering lineDelEx Conference 2020: DevOps & Test Automation2020-02-14
The talk examines the SDET role as originating at Microsoft but often marketed as a premium title, illustrating concrete work such as testing storage firmware…
Talk in Russian on
Monads for TestersSelenium Camp 20192019-02-22
Shows how functional programming in Scala on the JVM helps testers avoid bugs by using Option to eliminate nulls, Either instead of exceptions, immutable case…
Talk in Russian on
Monads for TestersDelEx Conf 20192019-02-08
Shows concrete Scala-on-JVM examples of replacing exceptions with Option and Either to return values-or-errors, using map/flatMap for monadic composition, and…
Talk in Russian on
How to Test Artificial Intelligence and Machine Learning Solutions?SeleniumCamp 20182018-03-02
Practical guidance for testing machine learning and AI services: names types of problems that differ from regular software testing and describes approaches…
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How to Test Artificial Intelligence and Machine Learning Solutions?DelEx Conf 20182018-02-17
Demonstrates testing a Titanic ML classifier built with Python and pandas: trains logistic regression, improves ROC AUC from 0.77 to 0.85 via feature…
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Data Warehouse in Google CloudGDG DevFest Ukraine 20172017-10-13
Toptal builds a Data Warehouse on Google Cloud using BigQuery for self-service analytics, Google Cloud Storage for daily Avro snapshots, and an ETL pipeline in…
Talk on
Test Automation: Do the Same but BetterTestCon Vilnius 20162016-10-21
A tiny Rails app that calculates an average rate and tests written in Ruby move from Selenium Firefox UI tests to direct DB inserts then to an internal JSON…
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