Hi, I am on solr 4.8.1 and running master-slave setup with lots of cores (>3K). Internally I maintain an instance of HTTPSolrServer for each core that is reused for querying the respective cores. A request is received by an intermediary tomcat and forwarded to another tomcat running Solr.
Over the period we see high search latency. Some requests start to take too long and eventually result into timeouts. Investigating this, I see that, over the period, a high number of CLOSE_WAIT sockets (>3300) are building up. Running `netstat -p` seems to suggest that these sockets were initiated by the intermediary tomcats when communicating to the Solr. Questions are: - Why do we see such high number of CLOSE_WAiT sockets? Shouldn't the HTTPSolrServer take care of closing these connections after communicating with the Solr server? - Does the high number of CLOSE_WAIT have anything to do with search latency? Any suggestion on the matter is highly appreciated! Regards, Niraj
