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Here are some questions and answers related to Impala, covering various aspects of its usage, architecture, and functionality. These are useful for interview preparation or as a study guide. 1. What is Impala? Answer:Impala is an MPP (Massively Paral...
Here are some commonly asked questions and answers related to AWS Lambda: 1. What is AWS Lambda? Answer:AWS Lambda is a serverless computing service that lets you run your code without managing any servers. You only pay for the time your code runs. L...
Here are some common AWS Glue questions and answers that can help you understand the service better: 1. What is AWS Glue? Answer: AWS Glue is a fully managed ETL (Extract, Transform, Load) service that allows you to prepare and load data for analytic...
In an interview, questions about managed vs. external tables in PySpark are likely to focus on concepts, practical applications, and potential scenarios where one is preferable over the other. Here are some areas to prepare for: 1. Definition and Dif...
Here are some common interview questions and answers related to transformations in Spark: 1. What are narrow and wide transformations in Spark? Answer: Narrow transformations are transformations where each partition of the parent RDD is used to produ...
Conceptual Questions What is parallelize in PySpark? parallelize is a method in PySpark used to convert a Python collection (like a list or a tuple) into an RDD (Resilient Distributed Dataset). This allows you to perform parallel processing on the ...
What is Snowflake? Snowflake is a cloud-native platform that eliminates the need for separate data warehouses, data lakes, and data marts, allowing secure data sharing across the organization. Its platform sits on public clouds and allows organizatio...