It depends on which context. Elasticsearch has abandoned their search engine origins and embraced logging and analytics. Those that work in NLP and text proces

It depends on which context. Elasticsearch has abandoned their search engine origins and embraced logging and analytics. Those that work in NLP and text processing are still using Solr. The edmismax parser is far more flexible and you can easily create your own query parser. Elasticsearch excels at ease of use and supporting multiple programming languages via various clients. Solr is slowly moving away from XML, but cryptic query parser syntax remains.