SOLR-8297 - Join on sharded collections

Hi, Solr Join on sharded from collections was supported in Solr 4.x but broke in Solr 5.x (8297). This issue is blocking issue as it directly impacts search functionality. A fix for this ?issue is committed and ready for merge. Please review

Re: Cross collection join in Solr 5.x

; There is no much progress on > https://issues.apache.org/jira/browse/SOLR-8297 > Although it's really achievable. > > On Thu, Apr 21, 2016 at 7:52 PM, Shikha Somani <ssom...@impetus.com> > wrote: > > > Greetings, > > > > > > Background: Our applicat

Cross collection join in Solr 5.x

Greetings, Background: Our application is using Solr 4.10 and has multiple collections all of them sharded equally on Solr. These collections were joined to support complex queries. Problem: We are trying to upgrade to Solr 5.x. However from Solr 5.2 onward to join two collections it is a