Hi Taher, Solr has the function of result grouping.
I think it has two steps. First, it tries to find how many groups are there in the result and choose top groups (say 10 groups) using a priority queue. Second, provide 10 priority queues for each groups and search again to collect second or after documents that belong to each group. It is called as "two pass collapsing algorithm". There is good description written by Yonik at SOLR-1773. (see Description) https://issues.apache.org/jira/browse/SOLR-1773 Koji On 2016/02/24 1:55, Taher Galal wrote:
Hi, I was wondering how to extend the grouping lucene functionality as I am not sure how the values of the field are grouped therefore making me group them faster any tutorial or direction would be great Thanks, Taher Galal
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