This is a good book for someone who wants understand and try out the latest search framework ElasticSearch built on top of Lucene. This claims to provide the best, flexible, distributed and enterprise Search Framework
It covers almost all the topic that is required
- Introduction to Elastic Search
- Understanding Shards, Nodes and cluster.
- Indexing and Searching Techniques
- Templates, Mapping
- Different API's
I would suggest this book for someone interested in ElasticSearch Server.