[ https://issues.apache.org/jira/browse/SOLR-3790?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
shou aoki updated SOLR-3790: ---------------------------- Description: Hi, Im using Solr 3.5. I found strange phenomenon in solr log. This phenomenon has two exceptions that NullPointerException and ConcurrentModificationException. These exceptions are thrown by discrete threads. I think, The same two queries thrown at same time because error log recorded at same time. But I can't reproduce it. Does anyone have the same phenomenon? {code} 2012-08-21 00:07:49,868 [qtp979682126-953] ERROR SolrCore - java.util.ConcurrentModificationException at java.util.LinkedList$ListItr.checkForComodification(LinkedList.java:778) at java.util.LinkedList$ListItr.next(LinkedList.java:713) at org.apache.solr.highlight.SolrHighlighter.getHighlightFields(SolrHighlighter.java:106) at org.apache.solr.util.SolrPluginUtils.optimizePreFetchDocs(SolrPluginUtils.java:259) at org.apache.solr.handler.component.QueryComponent.doPrefetch(QueryComponent.java:478) at org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:385) at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:194) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129) at org.apache.solr.core.SolrCore.execute(SolrCore.java:1372) at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:356) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:252) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1337) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:486) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:520) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:233) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:973) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:417) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:192) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:907) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:250) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110) at org.eclipse.jetty.server.Server.handle(Server.java:350) at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:442) at org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:941) at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:801) at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:224) at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:51) at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:586) at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:44) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533) at java.lang.Thread.run(Thread.java:679) 2012-08-21 00:07:49,868 [qtp979682126-938] ERROR SolrCore - java.lang.NullPointerException at org.apache.solr.highlight.SolrHighlighter.getHighlightFields(SolrHighlighter.java:107) at org.apache.solr.util.SolrPluginUtils.optimizePreFetchDocs(SolrPluginUtils.java:259) at org.apache.solr.handler.component.QueryComponent.doPrefetch(QueryComponent.java:478) at org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:385) at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:194) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129) at org.apache.solr.core.SolrCore.execute(SolrCore.java:1372) at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:356) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:252) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1337) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:486) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:520) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:233) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:973) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:417) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:192) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:907) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:250) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110) at org.eclipse.jetty.server.Server.handle(Server.java:350) at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:442) at org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:941) at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:801) at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:224) at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:51) at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:586) at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:44) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533) at java.lang.Thread.run(Thread.java:679) {code} This is rarely accident? These are discrete bug? See: Similar phenomenon http://lucene.472066.n3.nabble.com/Null-Pointer-Exception-in-SOLR-td3954952.html was: Hi, Im using Solr 3.5. I found strange phenomenon in solr log. This phenomenon has two exceptions that NullPointerException and ConcurrentModificationException. These exceptions are thrown by discrete threads. I think, The same two queries thrown at same time because error log recorded at same time. But I can't reproduce it. Does anyone have the same phenomenon? {code} 2012-08-21 00:07:49,868 [qtp979682126-953] ERROR SolrCore - java.util.ConcurrentModificationException at java.util.LinkedList$ListItr.checkForComodification(LinkedList.java:778) at java.util.LinkedList$ListItr.next(LinkedList.java:713) at org.apache.solr.highlight.SolrHighlighter.getHighlightFields(SolrHighlighter.java:106) at org.apache.solr.util.SolrPluginUtils.optimizePreFetchDocs(SolrPluginUtils.java:259) at org.apache.solr.handler.component.QueryComponent.doPrefetch(QueryComponent.java:478) at org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:385) at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:194) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129) at org.apache.solr.core.SolrCore.execute(SolrCore.java:1372) at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:356) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:252) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1337) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:486) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:520) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:233) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:973) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:417) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:192) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:907) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:250) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110) at org.eclipse.jetty.server.Server.handle(Server.java:350) at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:442) at org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:941) at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:801) at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:224) at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:51) at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:586) at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:44) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533) at java.lang.Thread.run(Thread.java:679) 2012-08-21 00:07:49,868 [qtp979682126-938] ERROR SolrCore - java.lang.NullPointerException at org.apache.solr.highlight.SolrHighlighter.getHighlightFields(SolrHighlighter.java:107) at org.apache.solr.util.SolrPluginUtils.optimizePreFetchDocs(SolrPluginUtils.java:259) at org.apache.solr.handler.component.QueryComponent.doPrefetch(QueryComponent.java:478) at org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:385) at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:194) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129) at org.apache.solr.core.SolrCore.execute(SolrCore.java:1372) at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:356) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:252) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1337) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:486) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:520) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:233) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:973) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:417) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:192) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:907) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:250) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110) at org.eclipse.jetty.server.Server.handle(Server.java:350) at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:442) at org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:941) at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:801) at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:224) at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:51) at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:586) at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:44) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533) at java.lang.Thread.run(Thread.java:679) {code} This is rarely accident? These are discrete bug? > NullPointerException and ConcurrentModificationException are thrown when > searching with highlighter > --------------------------------------------------------------------------------------------------- > > Key: SOLR-3790 > URL: https://issues.apache.org/jira/browse/SOLR-3790 > Project: Solr > Issue Type: Bug > Components: highlighter > Affects Versions: 3.5 > Environment: Ubuntu 12.04, Solr 3.5 > Reporter: shou aoki > > Hi, Im using Solr 3.5. > I found strange phenomenon in solr log. > This phenomenon has two exceptions that NullPointerException and > ConcurrentModificationException. > These exceptions are thrown by discrete threads. > I think, The same two queries thrown at same time because error log recorded > at same time. But I can't reproduce it. > Does anyone have the same phenomenon? > {code} > 2012-08-21 00:07:49,868 [qtp979682126-953] ERROR SolrCore - > java.util.ConcurrentModificationException > at > java.util.LinkedList$ListItr.checkForComodification(LinkedList.java:778) > at java.util.LinkedList$ListItr.next(LinkedList.java:713) > at > org.apache.solr.highlight.SolrHighlighter.getHighlightFields(SolrHighlighter.java:106) > at > org.apache.solr.util.SolrPluginUtils.optimizePreFetchDocs(SolrPluginUtils.java:259) > at > org.apache.solr.handler.component.QueryComponent.doPrefetch(QueryComponent.java:478) > at > org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:385) > at > org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:194) > at > org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129) > at org.apache.solr.core.SolrCore.execute(SolrCore.java:1372) > at > org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:356) > at > org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:252) > at > org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1337) > at > org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:486) > at > org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119) > at > org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:520) > at > org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:233) > at > org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:973) > at > org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:417) > at > org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:192) > at > org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:907) > at > org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117) > at > org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:250) > at > org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110) > at org.eclipse.jetty.server.Server.handle(Server.java:350) > at > org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:442) > at > org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:941) > at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:801) > at > org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:224) > at > org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:51) > at > org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:586) > at > org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:44) > at > org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598) > at > org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533) > at java.lang.Thread.run(Thread.java:679) > 2012-08-21 00:07:49,868 [qtp979682126-938] ERROR SolrCore - > java.lang.NullPointerException > at > org.apache.solr.highlight.SolrHighlighter.getHighlightFields(SolrHighlighter.java:107) > at > org.apache.solr.util.SolrPluginUtils.optimizePreFetchDocs(SolrPluginUtils.java:259) > at > org.apache.solr.handler.component.QueryComponent.doPrefetch(QueryComponent.java:478) > at > org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:385) > at > org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:194) > at > org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129) > at org.apache.solr.core.SolrCore.execute(SolrCore.java:1372) > at > org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:356) > at > org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:252) > at > org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1337) > at > org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:486) > at > org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119) > at > org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:520) > at > org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:233) > at > org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:973) > at > org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:417) > at > org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:192) > at > org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:907) > at > org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117) > at > org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:250) > at > org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110) > at org.eclipse.jetty.server.Server.handle(Server.java:350) > at > org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:442) > at > org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:941) > at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:801) > at > org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:224) > at > org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:51) > at > org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:586) > at > org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:44) > at > org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598) > at > org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533) > at java.lang.Thread.run(Thread.java:679) > {code} > This is rarely accident? These are discrete bug? > See: Similar phenomenon > http://lucene.472066.n3.nabble.com/Null-Pointer-Exception-in-SOLR-td3954952.html -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org