The Java 8 development server runs on your local machine and emulates most of the Search API's capabilities.
A few features are not available on the server. You should not attempt to use the following features when you run on the development server:
Stemming
Stemming of field values (for example "~cat") is not implemented.
Tokenization
String fields in Asian languages are not tokenized on the development server.
Scoring
The match scoring mechanism is not implemented.
Diacriticals
Diacritical marks (such as accent marks) cannot be used in atom, text, and HTML fields.