Hi,
I am facing "Cannot talk to ZooKeeper" issue intermittently in solr index update. While facing this issue strange thing is that there is no error in ZooKeeper logs and also all shards are showing active in solr admin panel. Please find below details logs and Solr server configuration. Logs: ERROR (qtp41903949-261266) [c:documents s:shard1 r:core_node4 x:documents] o.a.s.h.RequestHandlerBase org.apache.solr.common.SolrException: Cannot talk to ZooKeeper - Updates are disabled. at org.apache.solr.update.processor.DistributedUpdateProcessor.zkCheck(DistributedUpdateProcessor.java:1490) at org.apache.solr.update.processor.DistributedUpdateProcessor.processAdd(DistributedUpdateProcessor.java:678) at org.apache.solr.update.processor.LogUpdateProcessorFactory$LogUpdateProcessor.processAdd(LogUpdateProcessorFactory.java:103) at org.apache.solr.update.processor.UpdateRequestProcessor.processAdd(UpdateRequestProcessor.java:48) at org.apache.solr.update.processor.AsiteDocumentUpdateReqProcessor.processAdd(AsiteDocumentUpdateReqProcessorFactory.java:125) at org.apache.solr.handler.loader.JavabinLoader$1.update(JavabinLoader.java:97) at org.apache.solr.client.solrj.request.JavaBinUpdateRequestCodec$1.readOuterMostDocIterator(JavaBinUpdateRequestCodec.java:179) at org.apache.solr.client.solrj.request.JavaBinUpdateRequestCodec$1.readIterator(JavaBinUpdateRequestCodec.java:135) at org.apache.solr.common.util.JavaBinCodec.readVal(JavaBinCodec.java:274) at org.apache.solr.client.solrj.request.JavaBinUpdateRequestCodec$1.readNamedList(JavaBinUpdateRequestCodec.java:121) at org.apache.solr.common.util.JavaBinCodec.readVal(JavaBinCodec.java:239) at org.apache.solr.common.util.JavaBinCodec.unmarshal(JavaBinCodec.java:157) at org.apache.solr.client.solrj.request.JavaBinUpdateRequestCodec.unmarshal(JavaBinUpdateRequestCodec.java:186) at org.apache.solr.handler.loader.JavabinLoader.parseAndLoadDocs(JavabinLoader.java:107) at org.apache.solr.handler.loader.JavabinLoader.load(JavabinLoader.java:54) at org.apache.solr.handler.UpdateRequestHandler$1.load(UpdateRequestHandler.java:97) at org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:69) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:156) at org.apache.solr.core.SolrCore.execute(SolrCore.java:2036) at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:657) at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:464) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:257) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:208) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1668) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:581) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1160) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:511) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1092) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:213) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:119) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134) at org.eclipse.jetty.server.Server.handle(Server.java:518) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:308) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:244) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:273) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95) at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93) at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:246) at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:156) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572) at java.lang.Thread.run(Thread.java:745) Solr server configuration: Processor: Intel(R) Xeon(R) CPU ES-2630 V4 @ 2.20Ghz (2 processor) RAM : 128 GB usable System type : 64-bit OS : Window Server 2012 standard Thanks & Regards, Bhaumik Joshi
