Apache Parquet is a columnar storage format available to any project in the Hadoop ecosystem, regardless of the choice of data processing framework, data model or programming language.
Apache Arrow is a columnar in-memory analytics layer designed to accelerate big data.
Apache Solr is an open source enterprise search server based on Lucene search library, with XML/HTTP and JSON APIs, hit highlighting, faceted search, caching, replication etc.
Apache Ranger is a framework designed to enable, monitor and manage comprehensive data security across the Hadoop platform.
Apache Openmeetings provides video conferencing, instant messaging, white board, collaborative document editing and other groupware tools using API functions of the Red5 Streaming Server for Remoting and Streaming.
Apache Sling is an innovative web framework that is intended to bring back the fun to web development.
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