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Repartition vs Coalesce vs partitionBy on Azure Databricks: Controlling Output Files When Writing Delta Tables

Repartition vs Coalesce vs partitionBy on Azure Databricks: Controlling Output Files When Writing Delta Tables

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6 min read
Auto CDF Moved the CDC Tax From Writes to Reads: Delta CDF vs Auto CDF vs Spark 4.2 CHANGES

Auto CDF Moved the CDC Tax From Writes to Reads: Delta CDF vs Auto CDF vs Spark 4.2 CHANGES

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9 min read
PySpark Caching on Azure Databricks: cache() vs persist() vs checkpoint(), the Disk Cache, and When Caching Hurts

PySpark Caching on Azure Databricks: cache() vs persist() vs checkpoint(), the Disk Cache, and When Caching Hurts

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6 min read
Como aprendi Apache Spark — Parte 5: Joins — Shuffle, Broadcast e estratégias de execução

Como aprendi Apache Spark — Parte 5: Joins — Shuffle, Broadcast e estratégias de execução

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14 min read
Como aprendi Apache Spark — Parte 4: Shuffle — onde a performance começa a ficar avançada

Como aprendi Apache Spark — Parte 4: Shuffle — onde a performance começa a ficar avançada

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13 min read
Próximo: Parte 2 — Por dentro da arquitetura do Apache Spark: Driver, Executors, Jobs, Stages e Tasks

Próximo: Parte 2 — Por dentro da arquitetura do Apache Spark: Driver, Executors, Jobs, Stages e Tasks

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10 min read
Como aprendi Apache Spark — Parte 3: Partições, paralelismo e performance

Como aprendi Apache Spark — Parte 3: Partições, paralelismo e performance

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13 min read
Building a Spark Connect Client in OCaml because I'm crazy and you're not

Building a Spark Connect Client in OCaml because I'm crazy and you're not

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21 min read
PySpark Window Functions on Databricks: Latest-Record Dedup, Running Totals, Sessionisation, and the Frame Traps

PySpark Window Functions on Databricks: Latest-Record Dedup, Running Totals, Sessionisation, and the Frame Traps

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5 min read
Stop Writing Custom File Listeners: Use Auto Loader Instead

Stop Writing Custom File Listeners: Use Auto Loader Instead

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5 min read
Como aprendi Apache Spark — Parte 7: Memória — Executors, Driver, Cache, Spill e OutOfMemory

Como aprendi Apache Spark — Parte 7: Memória — Executors, Driver, Cache, Spill e OutOfMemory

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16 min read
Diagnosing and Fixing Data Skew in PySpark on Azure Databricks (2026 Edition)

Diagnosing and Fixing Data Skew in PySpark on Azure Databricks (2026 Edition)

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8 min read
Como aprendi Apache Spark — Parte 1: Por que o Spark mudou o processamento de Big Data

Como aprendi Apache Spark — Parte 1: Por que o Spark mudou o processamento de Big Data

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7 min read
Como aprendi Apache Spark: revisitando uma jornada pela Engenharia de Dados

Como aprendi Apache Spark: revisitando uma jornada pela Engenharia de Dados

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4 min read
How I Built a Two-Tier Data Platform in 9 Phases (Spark, Kafka, dbt, Kubernetes)

How I Built a Two-Tier Data Platform in 9 Phases (Spark, Kafka, dbt, Kubernetes)

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6 min read
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