Hi , I have been facing lot of issues in using solr update functionality . Multitude of requests respond with
* org.apache.solr.client.solrj.impl.HttpSolrClient$RemoteSolrException: Error from server at http://192.169.33.86/solr/cms <http://192.169.33.86/solr/cms>: Expected mime type application/octet-stream but got text/html. <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"><html><head><title>502 Proxy Error</title></head><body><h1>Proxy Error</h1><p>The proxy server received an invalid^Mresponse from an upstream server.<br />^MThe proxy server could not handle the request <em><a href="/solr/cms/update">POST /solr/cms/update</a></em>.<p>Reason: <strong>Error reading from remote server</strong></p></p></body></html>* Used solr version -> 6.5.0 Type -> master/Slave config Error in solr.log -> *2020-10-07 05:43:50.639 WARN (qtp142261320-27831) [ x:cms] o.a.s.c.SolrCore slow: [cms] webapp=/solr path=/update params={waitSearcher=true&commit=true&softCommit=false&wt=javabin&version=2} status=0 QTime=443272020-10-07 05:43:50.640 WARN (qtp142261320-27837) [ x:cms] o.a.s.u.DefaultSolrCoreState WARNING - Dangerous interruptjava.lang.InterruptedException at java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1326) at java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.tryLock(ReentrantReadWriteLock.java:871) at org.apache.solr.update.DefaultSolrCoreState.lock(DefaultSolrCoreState.java:167) at org.apache.solr.update.DefaultSolrCoreState.getIndexWriter(DefaultSolrCoreState.java:112) at org.apache.solr.update.DirectUpdateHandler2.commit(DirectUpdateHandler2.java:618) at org.apache.solr.update.processor.RunUpdateProcessor.processCommit(RunUpdateProcessorFactory.java:93) at org.apache.solr.update.processor.UpdateRequestProcessor.processCommit(UpdateRequestProcessor.java:68) at org.apache.solr.update.processor.DistributedUpdateProcessor.doLocalCommit(DistributedUpdateProcessor.java:1895) at org.apache.solr.update.processor.DistributedUpdateProcessor.processCommit(DistributedUpdateProcessor.java:1872) at org.apache.solr.handler.RequestHandlerUtils.handleCommit(RequestHandlerUtils.java:68) at org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:72) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:173) at org.apache.solr.core.SolrCore.execute(SolrCore.java:2440) at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:723) at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:529) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:347) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:298) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1691) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:582) 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:1180) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:512)* The rate of update query on master solr is 6 request per min only . Solr also slows down and search becomes really slow . I don't understand where to look for an issue . I have tried to check various parameters in update request , if I do softcommit=true and commit =false then updates do not reflect , so i have set below options -> UpdateRequest updateRequest = new UpdateRequest(); updateRequest.setAction( UpdateRequest.ACTION.COMMIT, true, true); waitsearcher=true , waitflush=true . I do not get what is causing the issue . Kindly suggest . Also I could not find much help from internet about given issues as well . -- Regards Aparana Bhatt
