Bug#948384: RFP: elasticsearch -- Open Source, Distributed, RESTful Search Engine

[Alessandro Barbieri <lssndrbarbieri@gmail.com>]

Package: wnpp
Severity: wishlist

* Package name    : elasticsearch
  Version         : 7.5
  Upstream Author : info@elastic.co
* URL             : https://github.com/elastic/elasticsearch
* License         : Apache-2.0
  Programming Lang: Java
  Description     : Open Source, Distributed, RESTful Search Engine


Fully free version here: https://www.elastic.co/downloads/elasticsearch-oss
Already packaged by upstream here: https://www.elastic.co/guide/en/elasticsearch/reference/7.5/deb.html#deb-repo


Elasticsearch is a distributed RESTful search engine built for the cloud. Features include:

    Distributed and Highly Available Search Engine.

        Each index is fully sharded with a configurable number of shards.

        Each shard can have one or more replicas.

        Read / Search operations performed on any of the replica shards.

    Multi Tenant.

        Support for more than one index.

        Index level configuration (number of shards, index storage, …​).

    Various set of APIs

        HTTP RESTful API

        All APIs perform automatic node operation rerouting.

    Document oriented

        No need for upfront schema definition.

        Schema can be defined for customization of the indexing process.

    Reliable, Asynchronous Write Behind for long term persistency.

    (Near) Real Time Search.

    Built on top of Apache Lucene

        Each shard is a fully functional Lucene index

        All the power of Lucene easily exposed through simple configuration / plugins.

    Per operation consistency

        Single document level operations are atomic, consistent, isolated and durable.