Catalyst is Spark's library for manipulating relational query plans and expressions

Apache Spark Avro connector provides seamless integration between Apache Spark SQL and Apache Avro data format with automatic schema evolution support and built-in compression capabilities

Core server component of Apache SkyWalking APM system providing distributed tracing, monitoring, and observability capabilities for microservices and cloud-native architectures.

Web support module for Apache Shiro providing servlet filters, session management, and web-specific authentication and authorization features

Spring Boot starter providing auto-configuration for Apache Shiro security framework in web applications

A powerful and flexible open-source Java security framework providing authentication, authorization, session management, and cryptographic services

Common library for Apache Ranger plugins providing shared functionality, models, and utilities for security policy enforcement across various big data components.

Apache Ranger Audit Plugin Framework providing centralized audit logging capabilities for Apache Ranger security plugins across various big data components.

Credential Builder for non-Hadoop Java codebase providing secure credential management for Java applications.

Mock implementations and test utilities for Apache Pulsar components including ZooKeeper and BookKeeper mocking functionality

Apache Pulsar HTTP Sink Connector that streams topic data to HTTP endpoints as JSON webhooks

Pulsar IO Debezium MySQL Source Connector for real-time change data capture from MySQL databases to Apache Pulsar topics

Core interfaces and abstractions for building Apache Pulsar IO connectors

Central API Module providing core interfaces and abstractions for unified access to industrial programmable logic controllers (PLCs)

Apache Pulsar Java client library for distributed pub-sub messaging platform

Java library for working with PDF documents, providing capabilities for creation, manipulation, text extraction, and rendering.

Apache MINA Core API - A network application framework which helps users develop high performance and highly scalable network applications easily

Per-directory local and remote repository metadata handling for Maven repositories

Core API for Maven plugin development providing the fundamental interfaces and abstract classes that all Maven plugins must implement or extend

Model for Maven POM (Project Object Model)