What is bucketing and partition?

Question

Accepted Answer

Bucketing is a technique in Hadoop that groups data into buckets based on a specific column, while partitioning divides data into logical units based on a specific column.

Bucketing is used to evenly distribute data across multiple files or directories.
Partitioning is used to organize data based on a specific column, making it easier to query and analyze.
Bucketing and partitioning can be used together to optimize data storage and query performance.
For example, in a dataset of customer transactions, bucketing can be done based on customer ID, while partitioning can be done based on transaction date.

Accepted Answer

Hive partitioning is a technique to organize hive tables in an efficient manner. Based on partition keys it divides tables into different parts. ... Bucketing is a technique where the tables or partitions are further sub-categorized into buckets for better structure of data and efficient querying