Hosting an Entire Open Lakehouse on Port 8080
Most of my job, at least the part people see, is running Spark code in front of other people and promising it'll work. The catch is that I almost ne…
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AUTO_CDC: Turning an event log into current state with Spark Declarative Pipelines
The question an event log can't answer cheaply The dataset I use for most of my pipeline demos is a simulated ghost kitchen (a delivery-only restaur…
Explaining the Python-JVM Boundary in Spark, and What Arrow Changed
Arrow's real contribution to PySpark isn't speed at any one API but a shared memory format at every boundary between the JVM and Python; each releas…
Most PySpark Tuning Advice Starts in the Wrong Place
When I benchmarked PySpark's UDF types earlier this year, I ran the same three workloads (trivial arithmetic, a string transform, a normal CDF) at f…
Don't Let Unity Catalog Migration Become Your Resume Generating Event
Why I chose this topic: I spent three days last quarter fixing a "simple" metadata sync that locked 200 production jobs out of their own tables beca…
[Перевод] Со Spark на Apache Doris: как Kwai ускорила расчёт метрик A/B-экспериментов в 145 раз
Kwai перенесла расчёт метрик A/B-экспериментов со Spark на Apache Doris: до 145 раз быстрее при снижении потребления ресурсов на 72%. В переводе раз…
Microsoft Fabric Now Encrypts Spark Temporary Data with Customer-Managed Keys;What It Actually Means
Microsoft Fabric has extended customer-managed key (CMK) encryption to cover temporary data generated during Spark job execution. This is not a mino…
От ANN к честному KNN на GPU: как мы пересобрали отбор кандидатов в рекомендациях Ozon
Привет! Мы команда рекомендательной системы Ozon, и сегодня мы хотим рассказать о нашем пути от приближённого поиска соседей (ANN) к точному KNN на…
TPC-DS в 07.2026. Lakehouse: Spark, Trino, StarRocks, Impala и Doris. GreenPlum & Cloudberry vs StarRocks как MPP
Привет, Хабр! На связи команда Data Sapience. С последней публикации результатов тестирования MPP-движков прошло уже несколько месяцев. За этот пери…
Azure Databricks vs Microsoft Fabric: An Honest Guide to When to Use What
If you're building a data platform on Azure in 2026, you're going to be asked this question: Azure Databricks or Microsoft Fabric? Both run on Delta…
Apache Spark Query Optimization on Databricks: Catalyst, AQE, and Photon Engine
A deep dive into how Spark transforms your SQL into a physical execution plan — and how Databricks layers Adaptive Query Execution and the Photon ve…