Is this under a very heavy indexing load? There were some inefficiencies that caused followers to work a lot harder than the leader, but the leader had to spin off a bunch of threads to send update to followers. That's fixed int he 5.2 release.
Best, Erick On Tue, Oct 13, 2015 at 8:40 AM, Rallavagu <rallav...@gmail.com> wrote: > Please help me understand what is going on with this thread. > > Solr 4.6.1, single shard, 4 node cluster, 3 node zk. Running on tomcat with > 500 threads. > > > There are 47 threads overall and designated leader becomes unresponsive > though shows "green" from cloud perspective. This is causing issues. > > particularly, > > " at > org/apache/solr/update/processor/DistributedUpdateProcessor.finish(DistributedUpdateProcessor.java:1278)[optimized] > ^-- Holding lock: java/util/LinkedList@0x2ee24e958[thin lock] > ^-- Holding lock: > org/apache/solr/update/StreamingSolrServers$1@0x2ee24e9c0[biased lock] > ^-- Holding lock: > org/apache/solr/update/StreamingSolrServers@0x2ee24ea90[biased lock]" > > > > "http-bio-8080-exec-2878" id=5899 idx=0x30c tid=17132 prio=5 alive, > native_blocked, daemon > at __lll_lock_wait+34(:0)@0x382ba0e262 > at safepointSyncOnPollAccess+167(safepoint.c:83)@0x7f83ae266138 > at trapiNormalHandler+484(traps_posix.c:220)@0x7f83ae29a745 > at _L_unlock_16+44(:0)@0x382ba0f710 > at java/util/LinkedList.peek(LinkedList.java:447)[optimized] > at > org/apache/solr/client/solrj/impl/ConcurrentUpdateSolrServer.blockUntilFinished(ConcurrentUpdateSolrServer.java:384)[inlined] > at > org/apache/solr/update/StreamingSolrServers.blockUntilFinished(StreamingSolrServers.java:98)[inlined] > at > org/apache/solr/update/SolrCmdDistributor.finish(SolrCmdDistributor.java:61)[inlined] > at > org/apache/solr/update/processor/DistributedUpdateProcessor.doFinish(DistributedUpdateProcessor.java:501)[inlined] > at > org/apache/solr/update/processor/DistributedUpdateProcessor.finish(DistributedUpdateProcessor.java:1278)[optimized] > ^-- Holding lock: java/util/LinkedList@0x2ee24e958[thin lock] > ^-- Holding lock: > org/apache/solr/update/StreamingSolrServers$1@0x2ee24e9c0[biased lock] > ^-- Holding lock: > org/apache/solr/update/StreamingSolrServers@0x2ee24ea90[biased lock] > at > org/apache/solr/handler/ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:83)[optimized] > at > org/apache/solr/handler/RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)[optimized] > at org/apache/solr/core/SolrCore.execute(SolrCore.java:1859)[optimized] > at > org/apache/solr/servlet/SolrDispatchFilter.execute(SolrDispatchFilter.java:721)[inlined] > at > org/apache/solr/servlet/SolrDispatchFilter.doFilter(SolrDispatchFilter.java:417)[inlined] > at > org/apache/solr/servlet/SolrDispatchFilter.doFilter(SolrDispatchFilter.java:201)[optimized] > at > org/apache/catalina/core/ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)[inlined] > at > org/apache/catalina/core/ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)[optimized] > at > org/apache/catalina/core/StandardWrapperValve.invoke(StandardWrapperValve.java:222)[optimized] > at > org/apache/catalina/core/StandardContextValve.invoke(StandardContextValve.java:123)[optimized] > at > org/apache/catalina/core/StandardHostValve.invoke(StandardHostValve.java:171)[optimized] > at > org/apache/catalina/valves/ErrorReportValve.invoke(ErrorReportValve.java:99)[optimized] > at > org/apache/catalina/valves/AccessLogValve.invoke(AccessLogValve.java:953)[optimized] > at > org/apache/catalina/core/StandardEngineValve.invoke(StandardEngineValve.java:118)[optimized] > at > org/apache/catalina/connector/CoyoteAdapter.service(CoyoteAdapter.java:408)[optimized] > at > org/apache/coyote/http11/AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)[optimized] > at > org/apache/coyote/AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)[optimized] > at > org/apache/tomcat/util/net/JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)[optimized] > ^-- Holding lock: > org/apache/tomcat/util/net/SocketWrapper@0x2ee6e4aa8[thin lock] > at > java/util/concurrent/ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)[inlined] > at > java/util/concurrent/ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)[optimized] > at java/lang/Thread.run(Thread.java:682)[optimized] > at jrockit/vm/RNI.c2java(JJJJJ)V(Native Method)
