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Vadim Kisselmann edited comment on SOLR-3238 at 3/15/12 1:14 PM: ----------------------------------------------------------------- Now i have error messages: SCHWERWIEGEND: The web application [/solr2] appears to have started a thread named [main-SendThread(zookeeper:2181)] but has failed to stop it. This is very likely to create a memory leak. Exception in thread "Thread-2" java.lang.NullPointerException at org.apache.solr.cloud.Overseer$CloudStateUpdater.amILeader(Overseer.java:179) at org.apache.solr.cloud.Overseer$CloudStateUpdater.run(Overseer.java:104) at java.lang.Thread.run(Thread.java:662) 15.03.2012 13:25:17 org.apache.catalina.loader.WebappClassLoader loadClass INFO: Illegal access: this web application instance has been stopped already. Could not load org.apache.zookeeper.server.ZooTrace. The eventual following stack trace is caused by an error thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access, and has no functional impact. java.lang.IllegalStateException at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1531) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1491) at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1196) 15.03.2012 13:25:17 org.apache.coyote.http11.Http11Protocol destroy SLF4J: The requested version 1.5.8 by your slf4j binding is not compatible with [1.6] SLF4J: See http://www.slf4j.org/codes.html#version_mismatch for further details. log4j:WARN No appenders could be found for logger (org.apache.solr.core.SolrResourceLoader). log4j:WARN Please initialize the log4j system properly. Steps: I deleted the one default core in solr.xml, because i would create new cores with CoreAdminHandler. I started tomcat. Now it's completely broken. Rebuild and restart, whether jetty or tomcat, change nothing. EDIT: i get the same problem on another server(tomcat, sharded, without ZK). With an old revision from Feb. it works, with new checkout from trunk not. EDIT2: It works when i remove the example-folder, checkout new version from trunk and rebuild it. i think it's a problem with solr.xml. On server-restart it breaks. With older revisions like r1292064 from Feb. it works. I think you're right, this has nothing to do with the admin UI. Sorry for spam here. New Issue? was (Author: ldb): Now i have error messages: SCHWERWIEGEND: The web application [/solr2] appears to have started a thread named [main-SendThread(zookeeper:2181)] but has failed to stop it. This is very likely to create a memory leak. Exception in thread "Thread-2" java.lang.NullPointerException at org.apache.solr.cloud.Overseer$CloudStateUpdater.amILeader(Overseer.java:179) at org.apache.solr.cloud.Overseer$CloudStateUpdater.run(Overseer.java:104) at java.lang.Thread.run(Thread.java:662) 15.03.2012 13:25:17 org.apache.catalina.loader.WebappClassLoader loadClass INFO: Illegal access: this web application instance has been stopped already. Could not load org.apache.zookeeper.server.ZooTrace. The eventual following stack trace is caused by an error thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access, and has no functional impact. java.lang.IllegalStateException at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1531) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1491) at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1196) 15.03.2012 13:25:17 org.apache.coyote.http11.Http11Protocol destroy SLF4J: The requested version 1.5.8 by your slf4j binding is not compatible with [1.6] SLF4J: See http://www.slf4j.org/codes.html#version_mismatch for further details. log4j:WARN No appenders could be found for logger (org.apache.solr.core.SolrResourceLoader). log4j:WARN Please initialize the log4j system properly. Steps: I deleted the one default core in solr.xml, because i would create new cores with CoreAdminHandler. I started tomcat. Now it's completely broken. Rebuild and restart, whether jetty or tomcat, change nothing. EDIT: i get the same problem on another server(tomcat, sharded, without ZK). With an old revision from Feb. it works, with new checkout from trunk not. > Sequel of Admin UI > ------------------ > > Key: SOLR-3238 > URL: https://issues.apache.org/jira/browse/SOLR-3238 > Project: Solr > Issue Type: Improvement > Components: web gui > Affects Versions: 4.0 > Reporter: Stefan Matheis (steffkes) > Assignee: Stefan Matheis (steffkes) > Fix For: 4.0 > > > Catch-All Issue for all upcoming Bugs/Reports/Suggestions on the Admin UI -- This message is automatically generated by JIRA. 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