Data Loss by Elasticsearch

It has been reported several times that due to the difference in internal structure, (i.e., different from Solar and Traditional Lucene search), elastic-search results in the loss of important data (may be up to 10%). The main reason behind such losses are:

(1) Its support to "Multiple-doc-types",

(2) No grouping: I.e., no grouping of indexes, which is generally used for weighting. 

(3) The Absence of Spellcheck: Also results in data loss due to the difference in spellings (as, it may create the different independent groups).

Some debate sources are:

1. https://www.quora.com/What-are-the-disadvantages-of-using-Elasticsearch-as-a-primary-database
2. https://www.quora.com/What-are-the-advantages-of-using-apache-solr-over-elasticsearch