Have opened JIRA for that: https://issues.apache.org/jira/browse/SOLR-6675
We have a SolrCloud with Solr version 4.7 with Tomcat 7. And our solr index(cores) are big(50~100G) each core. When we start up tomcat, the solr webapp deployment is very slow. From tomcat's catalina log, every time it takes about 10 minutes to get deployed. After we analyzing java core dump, we notice it's because the loading process cannot finish until the MBean calculation for large index is done. So we tried to remove the <jmx/> from solrconfig.xml, after that, the loading of solr webapp only take about 1 minute. So we can sure the MBean calculation for large index is the root cause. Could you please point me if there is any async way to do statistic monitoring without <jmx/> in solrconfig.xml, or let it do calculation after the deployment? Thanks! The callstack.png file in the attachment is the call stack of the long blocking thread which is doing statistics calculation. The catalina log of tomcat: INFO: Starting Servlet Engine: Apache Tomcat/7.0.54 Oct 13, 2014 2:00:29 AM org.apache.catalina.startup.HostConfig deployWAR INFO: Deploying web application archive /opt/ibm/solrsearch/tomcat/webapps/solr.war Oct 13, 2014 2:10:23 AM org.apache.catalina.startup.HostConfig deployWAR INFO: Deployment of web application archive /opt/ibm/solrsearch/tomcat/webapps/solr.war has finished in 594,325 ms <---------------- Time taken for solr app Deployment is about 10 minutes ----------- Oct 13, 2014 2:10:23 AM org.apache.catalina.startup.HostConfig deployDirectory INFO: Deploying web application directory /opt/ibm/solrsearch/tomcat/webapps/manager Oct 13, 2014 2:10:26 AM org.apache.catalina.startup.HostConfig deployDirectory INFO: Deployment of web application directory /opt/ibm/solrsearch/tomcat/webapps/manager has finished in 2,035 ms Oct 13, 2014 2:10:26 AM org.apache.catalina.startup.HostConfig deployDirectory INFO: Deploying web application directory /opt/ibm/solrsearch/tomcat/webapps/examples Oct 13, 2014 2:10:27 AM org.apache.catalina.startup.HostConfig deployDirectory INFO: Deployment of web application directory /opt/ibm/solrsearch/tomcat/webapps/examples has finished in 1,789 ms Oct 13, 2014 2:10:27 AM org.apache.catalina.startup.HostConfig deployDirectory INFO: Deploying web application directory /opt/ibm/solrsearch/tomcat/webapps/docs Oct 13, 2014 2:10:28 AM org.apache.catalina.startup.HostConfig deployDirectory INFO: Deployment of web application directory /opt/ibm/solrsearch/tomcat/webapps/docs has finished in 1,037 ms Oct 13, 2014 2:10:28 AM org.apache.catalina.startup.HostConfig deployDirectory INFO: Deploying web application directory /opt/ibm/solrsearch/tomcat/webapps/ROOT Oct 13, 2014 2:10:29 AM org.apache.catalina.startup.HostConfig deployDirectory INFO: Deployment of web application directory /opt/ibm/solrsearch/tomcat/webapps/ROOT has finished in 948 ms Oct 13, 2014 2:10:29 AM org.apache.catalina.startup.HostConfig deployDirectory INFO: Deploying web application directory /opt/ibm/solrsearch/tomcat/webapps/host-manager Oct 13, 2014 2:10:30 AM org.apache.catalina.startup.HostConfig deployDirectory INFO: Deployment of web application directory /opt/ibm/solrsearch/tomcat/webapps/host-manager has finished in 951 ms Oct 13, 2014 2:10:31 AM org.apache.coyote.AbstractProtocol start INFO: Starting ProtocolHandler ["http-bio-8080"] Oct 13, 2014 2:10:31 AM org.apache.coyote.AbstractProtocol start INFO: Starting ProtocolHandler ["ajp-bio-8009"] Oct 13, 2014 2:10:31 AM org.apache.catalina.startup.Catalina start INFO: Server startup in 601506 ms
