Hue and Impala are two popular tools in the Hadoop ecosystem that are used for data analysis and processing. While they are both designed to work with Hadoop, there are several key differences between the two.

1. User Interface: Hue provides a comprehensive web-based graphical user interface (GUI) that allows users to interact with Hadoop and its various components. It offers an intuitive interface for data querying, visualization, and management. On the other hand, Impala is a command-line based tool that allows users to interact with Hadoop through SQL-like queries.

2. Performance: Impala is known for its high-performance analytical query processing. It leverages a massively parallel processing (MPP) architecture, which allows it to process large datasets efficiently and provide faster query response times compared to traditional SQL engines. Hue, on the other hand, is not specifically designed for high-performance query processing and may be slower when dealing with large datasets.

3. Supported Operations: Hue provides a wide range of operations for managing and analyzing data in Hadoop. It supports data exploration, visualization, and querying using multiple programming languages, including SQL, Python, and Pig Latin. In contrast, Impala is primarily focused on SQL-like queries and does not offer the same level of support for other programming languages or data analysis tasks.

4. Data Accessibility: Hue provides a user-friendly interface that allows users to access and analyze data stored in various Hadoop components, such as HDFS, Hive, and HBase. It simplifies the process of accessing and manipulating data by providing a unified view and a set of built-in tools. Impala, on the other hand, is primarily designed for interactive querying of data stored in HDFS or HBase. It offers a more low-level approach and requires users to have a deeper understanding of the underlying data structures.

5. Security: Hue provides a comprehensive security framework that allows users to define and manage access controls for data stored in Hadoop. It supports integration with various authentication methods, including LDAP and Kerberos, and provides fine-grained access control options. Impala also supports security features such as authentication and authorization, but it may not offer the same level of flexibility and granularity as Hue.

6. Ease of Use: Hue is known for its user-friendly interface and intuitive design. It is designed to be beginner-friendly and provides a wide range of features and tools that make it easier for users to interact with Hadoop. Impala, on the other hand, has a steeper learning curve and may require users to have a deeper understanding of SQL and the underlying data structures in Hadoop.

In Summary, Hue and Impala are two tools in the Hadoop ecosystem that have different focuses and capabilities. While Hue provides a comprehensive web-based GUI for data analysis and management, Impala offers high-performance SQL-like querying capabilities.