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PySpark Window Functions on Databricks: Latest-Record Dedup, Running Totals, Sessionisation, and the Frame Traps
Karan Pulyala
Karan Pulyala
Karan Pulyala
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Oct 24
PySpark Window Functions on Databricks: Latest-Record Dedup, Running Totals, Sessionisation, and the Frame Traps
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spark
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databricks
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pyspark
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dataengineering
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5 min read
Como aprendi Apache Spark — Parte 6: Spark SQL e DataFrames — do código ao plano de execução
renanpyd
renanpyd
renanpyd
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Oct 24
Como aprendi Apache Spark — Parte 6: Spark SQL e DataFrames — do código ao plano de execução
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dataengineering
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bigdata
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cluster
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15 min read
Spark Join Strategies on Databricks: Broadcast, Sort-Merge, Shuffle Hash, and What AQE Changes
Karan Pulyala
Karan Pulyala
Karan Pulyala
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Oct 23
Spark Join Strategies on Databricks: Broadcast, Sort-Merge, Shuffle Hash, and What AQE Changes
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databricks
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spark
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dataengineering
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6 min read
Como aprendi Apache Spark — Parte 4: Shuffle — onde a performance começa a ficar avançada
renanpyd
renanpyd
renanpyd
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Oct 23
Como aprendi Apache Spark — Parte 4: Shuffle — onde a performance começa a ficar avançada
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bigdata
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13 min read
Próximo: Parte 2 — Por dentro da arquitetura do Apache Spark: Driver, Executors, Jobs, Stages e Tasks
renanpyd
renanpyd
renanpyd
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Oct 23
Próximo: Parte 2 — Por dentro da arquitetura do Apache Spark: Driver, Executors, Jobs, Stages e Tasks
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pyspark
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bigdata
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dataengineering
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spark
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10 min read
Como aprendi Apache Spark — Parte 3: Partições, paralelismo e performance
renanpyd
renanpyd
renanpyd
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Oct 23
Como aprendi Apache Spark — Parte 3: Partições, paralelismo e performance
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spark
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13 min read
Delta Lake Table Maintenance on Databricks: OPTIMIZE, Z-ORDER vs Liquid Clustering, and VACUUM
Karan Pulyala
Karan Pulyala
Karan Pulyala
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Oct 22
Delta Lake Table Maintenance on Databricks: OPTIMIZE, Z-ORDER vs Liquid Clustering, and VACUUM
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databricks
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deltalake
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dataengineering
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pyspark
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6 min read
Auto Loader and Structured Streaming on Azure Databricks: Checkpoints, Schema Evolution, and Exactly-Once
Karan Pulyala
Karan Pulyala
Karan Pulyala
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Oct 21
Auto Loader and Structured Streaming on Azure Databricks: Checkpoints, Schema Evolution, and Exactly-Once
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databricks
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dataengineering
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azure
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6 min read
Delta Lake MERGE in PySpark: Upserts, SCD Type 2, and the Traps Interviewers Ask About
Karan Pulyala
Karan Pulyala
Karan Pulyala
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Oct 20
Delta Lake MERGE in PySpark: Upserts, SCD Type 2, and the Traps Interviewers Ask About
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5 min read
Diagnosing and Fixing Data Skew in PySpark on Azure Databricks (2026 Edition)
Karan Pulyala
Karan Pulyala
Karan Pulyala
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Oct 19
Diagnosing and Fixing Data Skew in PySpark on Azure Databricks (2026 Edition)
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databricks
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pyspark
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dataengineering
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spark
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8 min read
Testing PySpark Data Quality in CI: A Practical Retail Media Example
Rupak Kulkarni
Rupak Kulkarni
Rupak Kulkarni
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Oct 21
Testing PySpark Data Quality in CI: A Practical Retail Media Example
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5 min read
CDP-6001 in PySpark: Six Code Blocks Behind 58% of the Cloudera ML Engineer Exam
Palak Mazumdar
Palak Mazumdar
Palak Mazumdar
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Oct 16
CDP-6001 in PySpark: Six Code Blocks Behind 58% of the Cloudera ML Engineer Exam
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machinelearning
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mlops
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8 min read
Your Delta MERGE Is Not a Mind Reader
Jennifer Evangelista
Jennifer Evangelista
Jennifer Evangelista
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Oct 24
Your Delta MERGE Is Not a Mind Reader
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databricks
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6 min read
Building a Retail Media Analytics Pipeline with PySpark: Bronze, Silver, and Gold
Rupak Kulkarni
Rupak Kulkarni
Rupak Kulkarni
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Oct 15
Building a Retail Media Analytics Pipeline with PySpark: Bronze, Silver, and Gold
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pyspark
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dataengineering
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analytics
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python
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 comment
5 min read
Spark's Modules, Seen Through Spark Connect
lnc
lnc
lnc
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Oct 14
Spark's Modules, Seen Through Spark Connect
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17 min read
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