To add it further, in 6.5.1, while indexing... even sometimes one of solr node goes down for a while and comes up automatically. During those period all our calls to index fails. Even in the Solr admin UI, we can see node not being active for a while and coming up again.
All these happens in 4 core machine ( r4-xlarge). If we move to r4-2xlarge ( 8 core machine )... everything goes smooth without any issue. Even CPU also stays with 50%. Is that mean that we need 8 core machine to run the index and query with such a data and heavy indexing rate ? -- Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html