We have developed Liferay plugin for Elasticsearch and are currently promoting it as ElasticRay. We have uploaded the project onto github aswell. We have an active community working on the product and support. For more details you can visit www.elasticray.com . We invite all Liferay portal users and development community to test it for free and help us scale the product.
We propose elasticsearch integration for all Liferay portal users both for Community and Enterprise Edition users.