Apache Solr is an application based on J2EE and uses Lucene libraries internally to provide user-friendly search as well as to generate the indexes. Solr is scalable, highly reliable and fault tolerant, providing replication, distributed indexing and load-balanced querying, recovery and automated failover, centralized configuration, and more. Solr powers the navigation and search features of internet sites. Read more about Apache Hive Architecture here.

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