On 5/12/2016 9:08 AM, Horváth Péter Gergely wrote: > As part of benchmark, I attempted to create about 2500 collections to > see how well that would work for us. Unfortunately, the experiment > yielded some disappointing results, after about 2000 being created > SolR got hung; REST requests started failing. I found the following in > the logs:
Solr will not handle that many collections very well. You're pushing the boundaries of scalability. See this issue that I created: https://issues.apache.org/jira/browse/SOLR-7191 Are you creating the collections sequentially, or running multiple CREATE actions simultaneously? Sequentially, where you wait for a previous CREATE to complete before executing another one, is strongly advised. SolrCloud starts to have serious problems when you create a lot of collections. We are aware of the scalability issues, but they are not easy to fix. Thanks, Shawn
