Hi Erick/Shawn, I went for the deleteById option but still under heavy load on my test machine I still see issues with the nodes going into recovery. I've also noticed in my testing that the leader changed and one node was down for a period before going into recovery. The two errors I see in the logs are "No registered leader was found" and " Cannot talk to ZooKeeper - Updates are disabled"
2019-05-28 16:53:21,651 [qtp1068824137-29348888] ERROR [c:bob s:shard1 r:core_node6 x:bob_shard1_replica2] org.apache.solr.common.SolrException (SolrException.java:148) - org.apache.solr.common.SolrException: Cannot talk to ZooKeeper - Updates are disabled. at org.apache.solr.update.processor.DistributedUpdateProcessor.zkCheck(DistributedUpdateProcessor.java:1472) at org.apache.solr.update.processor.DistributedUpdateProcessor.processAdd(DistributedUpdateProcessor.java:670) at org.apache.solr.update.processor.LogUpdateProcessorFactory$LogUpdateProcessor.processAdd(LogUpdateProcessorFactory.java:103) 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$1.load(UpdateRequestHandler.java:94) at org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:69) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:155) at org.apache.solr.core.SolrCore.execute(SolrCore.java:2102) at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:654) at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:460) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:257) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:208) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java: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:499) 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$3.run(QueuedThreadPool.java:555) at java.lang.Thread.run(Thread.java:745) and also this error 2019-05-28 16:54:04,503 [qtp1068824137-29348888] ERROR [c:bob s:shard1 r:core_node6 x:bob_shard1_replica2] org.apache.solr.common.SolrException (SolrException.java:148) - org.apache.solr.common.SolrException: No registered leader was found after waiting for 4000ms , collection: bob slice: shard1 at org.apache.solr.common.cloud.ZkStateReader.getLeaderRetry(ZkStateReader.java:626) at org.apache.solr.common.cloud.ZkStateReader.getLeaderRetry(ZkStateReader.java:612) at org.apache.solr.update.processor.DistributedUpdateProcessor.setupRequest(DistributedUpdateProcessor.java:367) at org.apache.solr.update.processor.DistributedUpdateProcessor.processDelete(DistributedUpdateProcessor.java:1142) at org.apache.solr.update.processor.LogUpdateProcessorFactory$LogUpdateProcessor.processDelete(LogUpdateProcessorFactory.java:124) at org.apache.solr.handler.loader.JavabinLoader.delete(JavabinLoader.java:151) at org.apache.solr.handler.loader.JavabinLoader.parseAndLoadDocs(JavabinLoader.java:112) at org.apache.solr.handler.loader.JavabinLoader.load(JavabinLoader.java:54) at org.apache.solr.handler.UpdateRequestHandler$1.load(UpdateRequestHandler.java:94) at org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:69) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:155) at org.apache.solr.core.SolrCore.execute(SolrCore.java:2102) at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:654) at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:460) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:257) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:208) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java: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:499) 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) Regards Russell Taylor - 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