I used SolrJ and wrote a test to confirm that the max query length supported by Solr (by default) was 8192 in Solr 5.3.1 Based on the default Jetty settings
jetty.xml: <Set name="requestHeaderSize"><Property name="solr.jetty.request.header.size" default="8192" /></Set> The test would not work however until I had used a max size of 4096 (so the query passes at 4095 and returns a RemoteSolrException at 4097). Is there another setting somewhere limiting the max query length? -Frank [cid:8D937273-A2BE-4FA2-9798-BF96569CE612] 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' 32" W [cid:EE1A5D21-5E1F-4367-8C2D-9CDA6E290D85]<http://360.here.com/> [cid:D08A4FC6-FF2D-49A9-81A7-18416A59A574] <https://twitter.com/here> [cid:29AF1DC5-112C-41DC-9B44-45D77B7244B0] <https://www.facebook.com/here> [cid:49338447-5524-432A-9DF5-410F280C84B5] <https://linkedin.com/company/heremaps> [cid:3B33E3BD-D090-4FCD-B163-6F757AA6D2F8] <https://www.instagram.com/here>