Hi, We are using auto discovery and have a use case where we want to be able to add cores dynamically, without restarting solr.
In 4.4 we were able to - add a directory (e.g. "core1") with an empty core.properties - call http://localhost:8983/solr/admin/cores?action=CREATE&core=core1&name=core1&instanceDir=%2Fsomewhere%2Fcore1 In 4.5 however this (the second step) fails, saying it cannot create a new core in that directory because another core is already defined there. >From the documentation (http://wiki.apache.org/solr/CoreAdmin), I understand that since 4.3 we should actually do "RELOAD". However, RELOAD results in this stacktrace: org.apache.solr.common.SolrException: Error handling 'reload' action at org.apache.solr.handler.admin.CoreAdminHandler.handleReloadAction(CoreAdminHandler.java:673) at org.apache.solr.handler.admin.CoreAdminHandler.handleRequestBody(CoreAdminHandler.java:172) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135) at org.apache.solr.servlet.SolrDispatchFilter.handleAdminRequest(SolrDispatchFilter.java:655) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:246) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:195) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:322) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) at org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228) at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582) Caused by: org.apache.solr.common.SolrException: Unable to reload core: core1 at org.apache.solr.core.CoreContainer.recordAndThrow(CoreContainer.java:936) at org.apache.solr.core.CoreContainer.reload(CoreContainer.java:691) at org.apache.solr.handler.admin.CoreAdminHandler.handleReloadAction(CoreAdminHandler.java:671) ... 20 more Caused by: org.apache.solr.common.SolrException: No such core: core1 at org.apache.solr.core.CoreContainer.reload(CoreContainer.java:642) ... 21 more Note that before I RELOAD, the core1 directory was created. Also note that next to the core1 directory, there is a core0 directory which has exactly the same content and is auto-discovered perfectly fine at startup. So... what should it be? Or am I missing something here? thanks in advance, Jan
