Blackbuck Insights Senior Data Engineer Interview Questions and Answers

Spark internal memory management involves allocating memory for storage, execution, and caching.

• Spark uses a unified memory management system that dynamically allocates memory between storage and execution.

• Memory is divided into regions for storage (cache) and execution (task memory).

• Spark also uses a spill mechanism to write data to disk when memory is full, preventing out-of-memory errors.

• Users can configure memory a...read more

Heap memory is used for dynamic memory allocation, while non-heap memory is used for static memory allocation.

• Heap memory is used for storing objects created at runtime, while non-heap memory is used for storing class files and method information.

• Heap memory is managed by garbage collector for automatic memory management, while non-heap memory is managed by the JVM.

• Examples of heap memory include objects created using ...read more