Apache Spark Certification Practice Test

The command sc.version is indeed the correct choice for checking the Spark version in the spark-shell. This command retrieves the version of the Spark application that is currently being used, allowing users to confirm they are working with the intended version.

Knowing the Spark version is crucial, especially in environments where compatibility with certain libraries or features is necessary. By executing sc.version, users can easily validate their Spark setup, ensuring that they have access to the features and optimizations available in that specific version. This practice is particularly important in development and production settings, where version discrepancies might lead to unexpected behavior or performance issues.

Other commands, such as sc.info, sc.application, and sc.check, do not provide direct information about the Spark version. Instead, they serve different purposes, such as retrieving application details or performing checks within the Spark context, but they do not specifically return the version of Spark being utilized.