On 2/25/2015 9:31 AM, Nitin Solanki wrote: > I want to search lakhs of queries/terms concurrently. > > Is there any technique to do multiprocessing on Solr? > Is Solr is capable to handle this situation? > I wrote a code in python that do multiprocessing and search lakhs of > queries and do hit on Solr simultaneously/ parallely at once but it seems > that Solr doesn't able to handle queries at once. > Any help Please?
Solr is fully multi-threaded and capable of handling multiple requests simultaneously. Any of the common servlet containers that are typically used to run Solr are *also* fully multi-threaded, but may require configuration adjustment to allow more threads. The jetty install that comes with the Solr example server is tuned to allow 10000 threads. Even if you have a very well-tuned Solr install on exceptionally robust hardware, I would not expect a single index on a single server to be able to handle more than a few hundred requests per second. If you need hundreds of thousands of simultaneous queries, you're going to need a lot of replicas on a lot of servers. With that volume you would want a load balancer to direct requests to those replicas. You may also run into problems related to TCP port exhaustion. Thanks, Shawn
