Hi, There is a while since I have had problem with Solr 5.2.1 and I could not fix it yet. The only think that is clear to me is when I send bulk update to Solr the commit thread will be blocked! Here is the thread dump output:
"qtp595445781-8207" prio=10 tid=0x00007f0bf68f5800 nid=0x5785 waiting for monitor entry [0x00007f081cf04000] java.lang.Thread.State: BLOCKED (on object monitor) at org.apache.solr.update.DirectUpdateHandler2.commit(DirectUpdateHandler2.java:608) - waiting to lock <0x000000067ba2e660> (a java.lang.Object) at org.apache.solr.update.processor.RunUpdateProcessor.processCommit(RunUpdateProcessorFactory.java:95) at org.apache.solr.update.processor.UpdateRequestProcessor.processCommit(UpdateRequestProcessor.java:64) at org.apache.solr.update.processor.DistributedUpdateProcessor.doLocalCommit(DistributedUpdateProcessor.java:1635) at org.apache.solr.update.processor.DistributedUpdateProcessor.processCommit(DistributedUpdateProcessor.java:1612) at org.apache.solr.update.processor.LogUpdateProcessor.processCommit(LogUpdateProcessorFactory.java:161) at org.apache.solr.update.processor.UpdateRequestProcessor.processCommit(UpdateRequestProcessor.java:64) at org.apache.solr.update.processor.UpdateRequestProcessor.processCommit(UpdateRequestProcessor.java:64) at org.apache.solr.handler.loader.XMLLoader.processUpdate(XMLLoader.java:270) at org.apache.solr.handler.loader.XMLLoader.load(XMLLoader.java:177) at org.apache.solr.handler.UpdateRequestHandler$1.load(UpdateRequestHandler.java:98) at org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:74) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:143) at org.apache.solr.core.SolrCore.execute(SolrCore.java:2064) at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:654) at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:450) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:227) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:196) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) at org.eclipse.jetty.server.Server.handle(Server.java:497) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257) at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555) at java.lang.Thread.run(Thread.java:745) Locked ownable synchronizers: - None FYI there are lots of blocked thread in thread dump report and Solr becomes really slow in this case. The temporary solution would be restarting Solr. But, I am really sick of restarting! I really appreciate if somebody can help me to solve this problem? Best regards. -- A.Nazemian
