Apache Hive Interview Questions and Answers

Ques 11. Explain Hive's internal architecture.

Hive consists of a query compiler, query optimizer, execution engine, and a metastore for storing metadata.

Ques 12. What is the purpose of Hive partitions?

Hive partitions allow you to divide a table into smaller, more manageable parts based on a specific column.

Ques 13. How can you perform data sorting in Hive?

You can use the 'SORT BY' clause in the 'CREATE TABLE' statement to achieve data sorting in Hive.

Example:

CREATE TABLE sorted_table (column1 INT, column2 STRING) SORT BY column1;

Ques 14. What are the differences between Hive and Pig?

Hive is SQL-based, while Pig uses a scripting language called Pig Latin. Hive is suitable for data warehousing, while Pig is more versatile for data processing.

Ques 15. What is Hive bucketing, and how is it useful?

Hive bucketing is a technique to divide data into buckets based on a hash function, improving query performance. It helps avoid full table scans.