10. pyspark performance tuning interview questions and answers | top 5 pyspark performance killers
Автор: SS UNITECH
Загружено: 2025-01-19
Просмотров: 2172
#azure #azuredatabricks #azuredatabrickswithpyspark #azuredataengineer #ssunitech
In this video, we dive deep into the most commonly asked PySpark performance tuning interview questions and provide clear, concise answers. Whether you're preparing for an interview or looking to improve your understanding of PySpark performance optimization, this video is for you. We cover various aspects of Spark performance tuning, including memory management, partitioning strategies, and best practices for optimizing PySpark jobs. By the end of this video, you'll have the knowledge to confidently handle performance-related questions in your next Spark interview.
Key topics covered:
Memory Tuning: Adjusting spark.executor.memory, spark.driver.memory, and memory overhead.
Partitioning: Choosing the right partition size and using repartition/coalesce effectively.
Shuffle Optimization: Understanding shuffle operations and optimizing them for better performance.
Caching and Persistence: When and how to cache RDDs and DataFrames for better performance.
Broadcast Variables: Leveraging broadcast variables to optimize joins and large dataset processing.
Garbage Collection: How Spark handles memory cleanup and managing garbage collection for optimal performance.
Data Skew: Identifying and mitigating data skew issues in Spark jobs.
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