question Cloudera Search Tutorial Error in Support Questions

question Cloudera Search Tutorial Error in Support Questions https://community.cloudera.com/t5/Support-Questions/java-lang-NullPointerException-received-when-following/m-p/285932#M212102 Completed the Tutorial, but querying fails Env: Migrated from CDH 5.14 to CDH 6.2 Solr 7.4.0   Browsing to <A href="#top" target="_blank" rel="noopener">mysolrserver:8983/solr/test_collection/select?q=*:*&wt=json&indent=true</A>   returns this error below. {   "responseHeader":{     "zkConnected":true,     "status":500,     "QTime":1,     "params":{       "q":"*:*",       "indent":"true",       "wt":"json"}},   "error":{     "trace":"java.lang.NullPointerException\n\tat org.apache.sentry.binding.solr.authz.SentrySolrPluginImpl.getShortUserName(SentrySolrPluginImpl.java:413)\n\tat org.apache.solr.handler.component.DocAuthorizationComponent.getUserName(DocAuthorizationComponent.java:80)\n\tat org.apache.solr.handler.component.DocAuthorizationComponent.prepare(DocAuthorizationComponent.java:95)\n\tat org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:272)\n\tat org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:199)\n\tat org.apache.solr.core.SolrCore.execute(SolrCore.java:2548)\n\tat org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:764)\n\tat org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:521)\n\tat org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:376)\n\tat org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:322)\n\tat org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1759)\n\tat org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:583)\n\tat org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)\n\tat org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)\n\tat org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226)\n\tat org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1180)\n\tat org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:513)\n\tat org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)\n\tat org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1112)\n\tat org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)\n\tat org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:213)\n\tat org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:119)\n\tat org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134)\n\tat org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:335)\n\tat org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134)\n\tat org.eclipse.jetty.server.Server.handle(Server.java:539)\n\tat org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:333)\n\tat org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251)\n\tat org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:283)\n\tat org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:108)\n\tat org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93)\n\tat org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303)\n\tat org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)\n\tat org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)\n\tat org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)\n\tat org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)\n\tat java.lang.Thread.run(Thread.java:748)\n",     "code":500}} Wed, 18 Dec 2019 20:48:40 GMT ChineduLB 2019-12-18T20:48:40Z