I have found that ZooKeeper is the weak link for SolrCloud especially if deployed on a Cloud environment (AWS).
https://issues.apache.org/jira/browse/SOLR-3274 https://issues.apache.org/jira/browse/SOLR-8868 And others see https://issues.apache.org/jira/browse/ZOOKEEPER-2112?jql=project%20%3D%20ZO OKEEPER%20AND%20issuetype%20%3D%20Bug%20AND%20status%20in%20(Open%2C%20%22I n%20Progress%22%2C%20Reopened)%20AND%20text%20~%20%22quorum%22 The kicker is that is ZK loses and quorum but gets it back we not only have to restart Solr servers but also those services who are clients :-( -Frank Frank Kelly Principal Software Engineer Predictive Analytics Team (SCBE/HAC/CDA) HERE 5 Wayside Rd, Burlington, MA 01803, USA 42° 29' 7" N 71° 11' 32² W <http://360.here.com/> <https://twitter.com/here> <https://www.facebook.com/here> <https://linkedin.com/company/heremaps> <https://www.instagram.com/here> On 4/8/16, 2:39 AM, "Midas A" <test.mi...@gmail.com> wrote: >Hi All , > >we are moving from master slave architecture to solr cloud architecture . >so i would like to know following > >- what kind of challenges we can face on production . > >- Is there any drawback of solrcloud > >- How solr cloud distributes requests between nodes and how node will >behave on heavy traffic . > >- Is there any way to shard node with custom logic > > > > >Regards, >MA