Solr 4.6.1 cloud
Looking into thread dump 4-5 threads causing cpu to go very high and
causing issues. These are tomcat's http threads and are locking. Can
anybody help me understand what is going on here? I see that incoming
connections coming in for updates and they are being passed on to
StreamingSolrServer and subsequently ConcurrentUpdateSolrServer and they
both have locks. Thanks.
"http-bio-8080-exec-4394" id=8774 idx=0x988 tid=14548 prio=5 alive,
native_blocked, daemon
at __lll_lock_wait+34(:0)@0x38caa0e262
at safepointSyncOnPollAccess+167(safepoint.c:83)@0x7fc29b9c9138
at trapiNormalHandler+484(traps_posix.c:220)@0x7fc29b9fd745
at _L_unlock_16+44(:0)@0x38caa0f710
at
java/util/concurrent/locks/ReentrantLock.lock(ReentrantLock.java:262)[optimized]
at
org/apache/solr/client/solrj/impl/ConcurrentUpdateSolrServer.blockUntilFinished(ConcurrentUpdateSolrServer.java:391)[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:
org/apache/solr/update/StreamingSolrServers$1@0x496cf6e50[biased lock]
^-- Holding lock:
org/apache/solr/update/StreamingSolrServers@0x49d32adc8[biased lock]
at
org/apache/solr/handler/ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:83)[optimized]
at
org/apache/solr/handler/RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)[optimized]
at org/apache/solr/core/SolrCore.execute(SolrCore.java:1859)[optimized]
at
org/apache/solr/servlet/SolrDispatchFilter.execute(SolrDispatchFilter.java:721)[inlined]
at
org/apache/solr/servlet/SolrDispatchFilter.doFilter(SolrDispatchFilter.java:417)[inlined]
at
org/apache/solr/servlet/SolrDispatchFilter.doFilter(SolrDispatchFilter.java:201)[optimized]
at
org/apache/catalina/core/ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)[inlined]
at
org/apache/catalina/core/ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)[optimized]
at
org/apache/catalina/core/StandardWrapperValve.invoke(StandardWrapperValve.java:222)[optimized]
at
org/apache/catalina/core/StandardContextValve.invoke(StandardContextValve.java:123)[optimized]
at
org/apache/catalina/core/StandardHostValve.invoke(StandardHostValve.java:171)[optimized]
at
org/apache/catalina/valves/ErrorReportValve.invoke(ErrorReportValve.java:99)[optimized]
at
org/apache/catalina/valves/AccessLogValve.invoke(AccessLogValve.java:953)[optimized]
at
org/apache/catalina/core/StandardEngineValve.invoke(StandardEngineValve.java:118)[optimized]
at
org/apache/catalina/connector/CoyoteAdapter.service(CoyoteAdapter.java:408)[optimized]
at
org/apache/coyote/http11/AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)[optimized]
at
org/apache/coyote/AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)[optimized]
at
org/apache/tomcat/util/net/JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)[optimized]
^-- Holding lock:
org/apache/tomcat/util/net/SocketWrapper@0x496e58810[thin lock]
at
java/util/concurrent/ThreadPoolExecutor$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)