The Apache Log4j 1.x Compatibility API

Apache Commons Logging is a thin adapter allowing configurable bridging to other, well-known logging systems.

Spark SQL is Apache Spark's module for working with structured data based on DataFrames.

Core libraries for Apache Spark, a unified analytics engine for large-scale data processing.

Core utilities and abstractions shared across Netty modules, including buffers, threading, and platform detection.

A Clojure HTTP library wrapping the Apache HttpComponents client.

Elasticsearch subproject :server

The Commons Configuration software library provides a generic configuration interface that enables an application to read configuration data from various sources and requires Java 8.

The core Java API for building stream processing applications with Apache Flink.

API elements for JIRA.

Confluence Core