we use solrcloud with version 5.2.1,openjdk 1.8,we have multiple solr machines, one of them keep increasing thread count ,I saw from http://xxxxxx:xxx/solr/#/~threads page, I found that a lot of [java.util.concurrent.locks.ReentrantReadWriteLock$FairSync@xxxxx] threads, the detail info like this:
sun.misc.Unsafe.park(Native Method) java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836) java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireShared(AbstractQueuedSynchronizer.java:967) java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireShared(AbstractQueuedSynchronizer.java:1283) java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.lock(ReentrantReadWriteLock.java:727) org.apache.solr.update.VersionInfo.lockForUpdate(VersionInfo.java:110) org.apache.solr.update.processor.DistributedUpdateProcessor.doLocalCommit(DistributedUpdateProcessor.java:1630) org.apache.solr.update.processor.DistributedUpdateProcessor.processCommit(DistributedUpdateProcessor.java:1612) org.apache.solr.update.processor.LogUpdateProcessor.processCommit(LogUpdateProcessorFactory.java:161) org.apache.solr.handler.RequestHandlerUtils.handleCommit(RequestHandlerUtils.java:69) org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:68) org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:143) org.apache.solr.core.SolrCore.execute(SolrCore.java:2064) org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:654) org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:450) org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:227) org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:196) org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585) org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577) org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223) org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127) org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515) org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185) org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061) org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215) org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110) org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) org.eclipse.jetty.server.Server.handle(Server.java:497) org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310) org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257) org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540) org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635) org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555) java.lang.Thread.run(Thread.java:745) anyone know the probably reson for this? -- Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html
