Ran into an issue attempting to create a core on a new install of Solr 8.6. The system is CentOS 8 fully updated and using Java OpenJDK version 14.0.1.
# java -version openjdk version "14.0.1" 2020-04-14 OpenJDK Runtime Environment 20.3 (build 14.0.1+7) OpenJDK 64-Bit Server VM 20.3 (build 14.0.1+7, mixed mode, sharing) Attempting to create a core from the command line results in the following messages: # cd /opt/solr; sudo -u solr bin/solr create_core -c foocore WARNING: Using _default configset with data driven schema functionality. NOT RECOMMENDED for production use. To turn off: bin/solr config -c foocore -p 8983 -action set-user-property -property update.autoCreateFields -value false ERROR: Error CREATEing SolrCore 'foocore': Unable to create core [foocore] Caused by: null The Solr admin site at http://localhost:8983/solr/#/ reports: SolrCore Initialization Failures foocore: org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: Bad or unsupported pattern: java.time.format.DateTimeFormatter$ClassicFormat@1c85900d Additional output while the server was running in the foreground: 2020-07-27 18:02:42.104 ERROR (qtp997850486-21) [ ] o.a.s.h.RequestHandlerBase org.apache.solr.common.SolrException: Error CREATEing SolrCore 'foocore': Unable to create core [foocore] Caused by: null at org.apache.solr.core.CoreContainer.create(CoreContainer.java:1312) at org.apache.solr.handler.admin.CoreAdminOperation.lambda$static$0(CoreAdminOperation.java:95) at org.apache.solr.handler.admin.CoreAdminOperation.execute(CoreAdminOperation.java:367) at org.apache.solr.handler.admin.CoreAdminHandler$CallInfo.call(CoreAdminHandler.java:397) at org.apache.solr.handler.admin.CoreAdminHandler.handleRequestBody(CoreAdminHandler.java:181) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:214) at org.apache.solr.servlet.HttpSolrCall.handleAdmin(HttpSolrCall.java:854) at org.apache.solr.servlet.HttpSolrCall.handleAdminRequest(HttpSolrCall.java:818) at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:566) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:415) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:345) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1596) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:545) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:590) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1610) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1300) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:485) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1580) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1215) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:221) at org.eclipse.jetty.server.handler.InetAccessHandler.handle(InetAccessHandler.java:177) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) at org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:322) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) at org.eclipse.jetty.server.Server.handle(Server.java:500) at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:383) at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:547) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:375) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:273) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103) at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129) at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:375) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:806) at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:938) at java.base/java.lang.Thread.run(Thread.java:832) Caused by: org.apache.solr.common.SolrException: Unable to create core [foocore] at org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1408) at org.apache.solr.core.CoreContainer.create(CoreContainer.java:1273) ... 47 more Caused by: org.apache.solr.common.SolrException: Bad or unsupported pattern: java.time.format.DateTimeFormatter$ClassicFormat@1c85900d at org.apache.solr.core.SolrCore.<init>(SolrCore.java:1071) at org.apache.solr.core.SolrCore.<init>(SolrCore.java:906) at org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1387) ... 48 more Caused by: org.apache.solr.common.SolrException: Bad or unsupported pattern: java.time.format.DateTimeFormatter$ClassicFormat@1c85900d at org.apache.solr.update.processor.ParseDateFieldUpdateProcessorFactory.validateFormatter(ParseDateFieldUpdateProcessorFactory.java:220) at org.apache.solr.update.processor.ParseDateFieldUpdateProcessorFactory.init(ParseDateFieldUpdateProcessorFactory.java:192) at org.apache.solr.core.PluginBag.initInstance(PluginBag.java:107) at org.apache.solr.core.PluginBag.createPlugin(PluginBag.java:155) at org.apache.solr.core.PluginBag.init(PluginBag.java:300) at org.apache.solr.core.PluginBag.init(PluginBag.java:289) at org.apache.solr.core.SolrCore.<init>(SolrCore.java:995) ... 50 more Caused by: java.time.format.DateTimeParseException: Text '2020-07-27T18:02:42.069Z' could not be parsed: null at java.base/java.time.format.DateTimeFormatter.createError(DateTimeFormatter.java:2021) at java.base/java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1924) at org.apache.solr.update.processor.ParseDateFieldUpdateProcessorFactory.parseInstant(ParseDateFieldUpdateProcessorFactory.java:233) at org.apache.solr.update.processor.ParseDateFieldUpdateProcessorFactory.validateFormatter(ParseDateFieldUpdateProcessorFactory.java:217) ... 56 more Caused by: java.lang.NullPointerException at java.base/java.time.format.DateTimeFormatterBuilder$PrefixTree.prefixLength(DateTimeFormatterBuilder.java:4538) at java.base/java.time.format.DateTimeFormatterBuilder$PrefixTree.add0(DateTimeFormatterBuilder.java:4407) at java.base/java.time.format.DateTimeFormatterBuilder$PrefixTree.add(DateTimeFormatterBuilder.java:4402) at java.base/java.time.format.DateTimeFormatterBuilder$ZoneTextPrinterParser.getTree(DateTimeFormatterBuilder.java:4149) at java.base/java.time.format.DateTimeFormatterBuilder$ZoneIdPrinterParser.parse(DateTimeFormatterBuilder.java:4260) at java.base/java.time.format.DateTimeFormatterBuilder$CompositePrinterParser.parse(DateTimeFormatterBuilder.java:2362) at java.base/java.time.format.DateTimeFormatterBuilder$CompositePrinterParser.parse(DateTimeFormatterBuilder.java:2362) at java.base/java.time.format.DateTimeFormatterBuilder$CompositePrinterParser.parse(DateTimeFormatterBuilder.java:2362) at java.base/java.time.format.DateTimeFormatterBuilder$CompositePrinterParser.parse(DateTimeFormatterBuilder.java:2372) at java.base/java.time.format.DateTimeFormatter.parseUnresolved0(DateTimeFormatter.java:2111) at java.base/java.time.format.DateTimeFormatter.parseResolved0(DateTimeFormatter.java:2040) at java.base/java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1920) ... 58 more 2020-07-27 18:02:42.104 INFO (qtp997850486-21) [ ] o.a.s.s.HttpSolrCall [admin] webapp=null path=/admin/cores params={name=foocore&action=CREATE&instanceDir=foocore&wt=json} status=400 QTime=1318 2020-07-27 18:02:53.943 INFO (qtp997850486-22) [ ] o.a.s.s.HttpSolrCall [admin] webapp=null path=/admin/cores params={indexInfo=false&wt=json&_=1595872899383} status=0 QTime=0 2020-07-27 18:02:53.954 INFO (qtp997850486-21) [ ] o.a.s.s.HttpSolrCall [admin] webapp=null path=/admin/info/system params={wt=json&_=1595872899384} status=0 QTime=6 2020-07-27 18:02:54.022 INFO (qtp997850486-19) [ ] o.a.s.s.HttpSolrCall [admin] webapp=null path=/admin/info/system params={wt=json&_=1595872899384} status=0 QTime=6 Chris