In Lucene it is possible to use the BlockGroupingCollector for grouping in order to take advantage of indexing document blocks ( IndexWriter.addDocuments()<http://lucene.apache.org/core/4_3_0/core/org/apache/lucene/index/IndexWriter.html?is-external=true#addDocuments%28java.lang.Iterable%29> ). With SOLR-3076 and SOLR-3535, it is possible to index document blocks. I would like to have an option to use the BlockGroupingCollector with Solr field-collapsing/grouping. Should I open a JIRA issue, or is there something that would prevent using Lucene's BlockGroupingCollector with Solr?
Tom
