On 5/9/2016 9:11 PM, lltvw wrote: > You are right, the max heap is 512MB, thanks.
90 million documents split into 12 shards means 7.5 million documents per shard. With that many documents and a 512MB heap, you're VERY lucky if Solr doesn't experience OutOfMemoryError problems -- which will make Solr's behavior very unpredictable. Your server has plenty of memory. Because of the very small max heap, it is probably spending a lot of time doing garbage collection. You'll actually need to *increase* your heap size. I would recommend starting with 4GB. Exactly how to do this will depend on how you're starting it. If you are starting it with "bin/solr" then you can add a -m 4g option to that commandline. Thanks, Shawn
