[ 
https://issues.apache.org/jira/browse/SOLR-16407?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Kevin Risden resolved SOLR-16407.
---------------------------------
    Resolution: Duplicate

> Classloading Issue when using ICUCollationField from analysis-extras module
> ---------------------------------------------------------------------------
>
>                 Key: SOLR-16407
>                 URL: https://issues.apache.org/jira/browse/SOLR-16407
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: Plugin system, Schema and Analysis, Server
>    Affects Versions: 9.0
>            Reporter: Thomas Wöckinger
>            Priority: Major
>
> Following exception is thrown when using a field type ICUCollationField:
> {code:java}
> 2022-09-09T12:31:56.496397694Z     at 
> org.apache.solr.servlet.HttpSolrCall.sendError(HttpSolrCall.java:840)
> 2022-09-09T12:31:56.496406951Z java.lang.RuntimeException: 
> java.lang.IllegalAccessError: class org.apache.solr.schema.ICUCollationField 
> tried to access protected field 
> org.apache.solr.schema.IndexSchema.luceneVersion 
> (org.apache.solr.schema.ICUCollationField is in unnamed module of loader 
> java.net.FactoryURLClassLoader @3bfc6a5e; org.apache.solr.schema.IndexSchema 
> is in unnamed module of loader org.eclipse.jetty.webapp.WebAppClassLoader 
> @2a7b6f69)
> 2022-09-09T12:31:56.496409552Z     at 
> org.apache.solr.servlet.HttpSolrCall.sendError(HttpSolrCall.java:840) 
> ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - janhoy 
> - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.496411778Z     at 
> org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:641) 
> ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - janhoy 
> - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.496413590Z     at 
> org.apache.solr.servlet.SolrDispatchFilter.dispatch(SolrDispatchFilter.java:239)
>  ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - 
> janhoy - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.496416131Z     at 
> org.apache.solr.servlet.SolrDispatchFilter.lambda$doFilter$0(SolrDispatchFilter.java:207)
>  ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - 
> janhoy - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.496424924Z     at 
> org.apache.solr.servlet.ServletUtils.traceHttpRequestExecution2(ServletUtils.java:257)
>  ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - 
> janhoy - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.496426807Z     at 
> org.apache.solr.servlet.ServletUtils.rateLimitRequest(ServletUtils.java:227) 
> ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - janhoy 
> - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.496428731Z     at 
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:202)
>  ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - 
> janhoy - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.496430555Z     at 
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:184)
>  ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - 
> janhoy - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.496432312Z     at 
> org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:201) 
> ~[jetty-servlet-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496434013Z     at 
> org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
>  ~[jetty-servlet-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496435709Z     at 
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548) 
> ~[jetty-servlet-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496437364Z     at 
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) 
> ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496439102Z     at 
> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:600) 
> ~[jetty-security-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496441769Z     at 
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496445056Z     at 
> org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496448830Z     at 
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496451117Z     at 
> org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496452869Z     at 
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1434)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496455018Z     at 
> org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496456718Z     at 
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501) 
> ~[jetty-servlet-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496458563Z     at 
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496460420Z     at 
> org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496462254Z     at 
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1349)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496464568Z     at 
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) 
> ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496466317Z     at 
> org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:191)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496468282Z     at 
> org.eclipse.jetty.server.handler.InetAccessHandler.handle(InetAccessHandler.java:177)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496470076Z     at 
> org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496471811Z     at 
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496473530Z     at 
> org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:322)
>  ~[jetty-rewrite-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496475265Z     at 
> org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:763)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496477298Z     at 
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496479343Z     at 
> org.eclipse.jetty.server.Server.handle(Server.java:516) 
> ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496481109Z     at 
> org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:400) 
> ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496482843Z     at 
> org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:645) 
> ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496485753Z     at 
> org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:392) 
> ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496487443Z     at 
> org.eclipse.jetty.server.HttpChannel.run(HttpChannel.java:352) 
> ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496489164Z     at 
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:338)
>  ~[jetty-util-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496490945Z     at 
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:315)
>  ~[jetty-util-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496492856Z     at 
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:173)
>  ~[jetty-util-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496494614Z     at 
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:137)
>  ~[jetty-util-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496496322Z     at 
> org.eclipse.jetty.http2.HTTP2Connection.produce(HTTP2Connection.java:183) 
> ~[http2-common-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496498036Z     at 
> org.eclipse.jetty.http2.HTTP2Connection.onFillable(HTTP2Connection.java:138) 
> ~[http2-common-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496499870Z     at 
> org.eclipse.jetty.http2.HTTP2Connection$FillableCallback.succeeded(HTTP2Connection.java:361)
>  ~[http2-common-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496501625Z     at 
> org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105) 
> ~[jetty-io-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496503323Z     at 
> org.eclipse.jetty.io.ssl.SslConnection$DecryptedEndPoint.onFillable(SslConnection.java:555)
>  ~[jetty-io-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496505077Z     at 
> org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:410) 
> ~[jetty-io-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496507011Z     at 
> org.eclipse.jetty.io.ssl.SslConnection$2.succeeded(SslConnection.java:164) 
> ~[jetty-io-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496508806Z     at 
> org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105) 
> ~[jetty-io-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496510556Z     at 
> org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104) 
> ~[jetty-io-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496512289Z     at 
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:338)
>  ~[jetty-util-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496513998Z     at 
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:315)
>  ~[jetty-util-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496515737Z     at 
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:173)
>  ~[jetty-util-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496517435Z     at 
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)
>  ~[jetty-util-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496519353Z     at 
> org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:409)
>  ~[jetty-util-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496522332Z     at 
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)
>  ~[jetty-util-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496524108Z     at 
> org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)
>  ~[jetty-util-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.496525832Z     at java.lang.Thread.run(Thread.java:833) 
> [?:?]
> 2022-09-09T12:31:56.496527519Z Caused by: java.lang.IllegalAccessError: class 
> org.apache.solr.schema.ICUCollationField tried to access protected field 
> org.apache.solr.schema.IndexSchema.luceneVersion 
> (org.apache.solr.schema.ICUCollationField is in unnamed module of loader 
> java.net.FactoryURLClassLoader @3bfc6a5e; org.apache.solr.schema.IndexSchema 
> is in unnamed module of loader org.eclipse.jetty.webapp.WebAppClassLoader 
> @2a7b6f69)
> 2022-09-09T12:31:56.496529567Z     at 
> org.apache.solr.schema.ICUCollationField.init(ICUCollationField.java:128) 
> ~[?:?]
> 2022-09-09T12:31:56.496531396Z     at 
> org.apache.solr.schema.FieldType.setArgs(FieldType.java:202) 
> ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - janhoy 
> - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.496533136Z     at 
> org.apache.solr.schema.FieldTypePluginLoader.init(FieldTypePluginLoader.java:149)
>  ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - 
> janhoy - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.496534928Z     at 
> org.apache.solr.schema.FieldTypePluginLoader.init(FieldTypePluginLoader.java:43)
>  ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - 
> janhoy - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.496536852Z     at 
> org.apache.solr.util.plugin.AbstractPluginLoader.loadSingle(AbstractPluginLoader.java:252)
>  ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - 
> janhoy - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.496538755Z     at 
> org.apache.solr.schema.ManagedIndexSchema.newFieldType(ManagedIndexSchema.java:1433)
>  ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - 
> janhoy - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.496540537Z     at 
> org.apache.solr.schema.SchemaManager$OpType$1.perform(SchemaManager.java:201) 
> ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - janhoy 
> - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.496542327Z     at 
> org.apache.solr.schema.SchemaManager.doOperations(SchemaManager.java:111) 
> ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - janhoy 
> - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.496544067Z     at 
> org.apache.solr.schema.SchemaManager.performOperations(SchemaManager.java:91) 
> ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - janhoy 
> - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.496545824Z     at 
> org.apache.solr.handler.SchemaHandler.handleRequestBody(SchemaHandler.java:93)
>  ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - 
> janhoy - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.496547673Z     at 
> org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:207)
>  ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - 
> janhoy - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.496549535Z     at 
> org.apache.solr.core.SolrCore.execute(SolrCore.java:2866) 
> ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - janhoy 
> - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.496554763Z     at 
> org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:887) 
> ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - janhoy 
> - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.496556776Z     at 
> org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:606) 
> ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - janhoy 
> - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.496558564Z     ... 55 more
> 2022-09-09T12:31:56.498163908Z 2022-09-09 12:31:56.482 WARN  
> (qtp1512903453-51) [] o.e.j.s.HttpChannel 
> /solr/CollectionUnderTestf1daaccc-255c-44bd-aa7c-b3ef0b8e73c1/schema => 
> java.lang.IllegalAccessError: class org.apache.solr.schema.ICUCollationField 
> tried to access protected field 
> org.apache.solr.schema.IndexSchema.luceneVersion 
> (org.apache.solr.schema.ICUCollationField is in unnamed module of loader 
> java.net.FactoryURLClassLoader @3bfc6a5e; org.apache.solr.schema.IndexSchema 
> is in unnamed module of loader org.eclipse.jetty.webapp.WebAppClassLoader 
> @2a7b6f69)
> 2022-09-09T12:31:56.498180147Z     at 
> org.apache.solr.schema.ICUCollationField.init(ICUCollationField.java:128)
> 2022-09-09T12:31:56.498183424Z java.lang.IllegalAccessError: class 
> org.apache.solr.schema.ICUCollationField tried to access protected field 
> org.apache.solr.schema.IndexSchema.luceneVersion 
> (org.apache.solr.schema.ICUCollationField is in unnamed module of loader 
> java.net.FactoryURLClassLoader @3bfc6a5e; org.apache.solr.schema.IndexSchema 
> is in unnamed module of loader org.eclipse.jetty.webapp.WebAppClassLoader 
> @2a7b6f69)
> 2022-09-09T12:31:56.498186396Z     at 
> org.apache.solr.schema.ICUCollationField.init(ICUCollationField.java:128) 
> ~[?:?]
> 2022-09-09T12:31:56.498188825Z     at 
> org.apache.solr.schema.FieldType.setArgs(FieldType.java:202) 
> ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - janhoy 
> - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.498190884Z     at 
> org.apache.solr.schema.FieldTypePluginLoader.init(FieldTypePluginLoader.java:149)
>  ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - 
> janhoy - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.498192966Z     at 
> org.apache.solr.schema.FieldTypePluginLoader.init(FieldTypePluginLoader.java:43)
>  ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - 
> janhoy - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.498194895Z     at 
> org.apache.solr.util.plugin.AbstractPluginLoader.loadSingle(AbstractPluginLoader.java:252)
>  ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - 
> janhoy - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.498196720Z     at 
> org.apache.solr.schema.ManagedIndexSchema.newFieldType(ManagedIndexSchema.java:1433)
>  ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - 
> janhoy - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.498199252Z     at 
> org.apache.solr.schema.SchemaManager$OpType$1.perform(SchemaManager.java:201) 
> ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - janhoy 
> - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.498201297Z     at 
> org.apache.solr.schema.SchemaManager.doOperations(SchemaManager.java:111) 
> ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - janhoy 
> - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.498203656Z     at 
> org.apache.solr.schema.SchemaManager.performOperations(SchemaManager.java:91) 
> ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - janhoy 
> - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.498210538Z     at 
> org.apache.solr.handler.SchemaHandler.handleRequestBody(SchemaHandler.java:93)
>  ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - 
> janhoy - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.498212638Z     at 
> org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:207)
>  ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - 
> janhoy - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.498214566Z     at 
> org.apache.solr.core.SolrCore.execute(SolrCore.java:2866) 
> ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - janhoy 
> - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.498216404Z     at 
> org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:887) 
> ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - janhoy 
> - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.498218289Z     at 
> org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:606) 
> ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - janhoy 
> - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.498220020Z     at 
> org.apache.solr.servlet.SolrDispatchFilter.dispatch(SolrDispatchFilter.java:239)
>  ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - 
> janhoy - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.498221967Z     at 
> org.apache.solr.servlet.SolrDispatchFilter.lambda$doFilter$0(SolrDispatchFilter.java:207)
>  ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - 
> janhoy - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.498223881Z     at 
> org.apache.solr.servlet.ServletUtils.traceHttpRequestExecution2(ServletUtils.java:257)
>  ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - 
> janhoy - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.498225926Z     at 
> org.apache.solr.servlet.ServletUtils.rateLimitRequest(ServletUtils.java:227) 
> ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - janhoy 
> - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.498227718Z     at 
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:202)
>  ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - 
> janhoy - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.498229485Z     at 
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:184)
>  ~[solr-core-9.0.0.jar:9.0.0 a4eb7aa123dc53f8dac74d80b66a490f2d6b4a26 - 
> janhoy - 2022-05-05 01:00:08]
> 2022-09-09T12:31:56.498231271Z     at 
> org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:201) 
> ~[jetty-servlet-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498233004Z     at 
> org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
>  ~[jetty-servlet-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498234694Z     at 
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548) 
> ~[jetty-servlet-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498236370Z     at 
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) 
> ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498238207Z     at 
> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:600) 
> ~[jetty-security-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498239979Z     at 
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498243186Z     at 
> org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498244937Z     at 
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498246666Z     at 
> org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498248358Z     at 
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1434)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498250054Z     at 
> org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498252096Z     at 
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501) 
> ~[jetty-servlet-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498254154Z     at 
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498255945Z     at 
> org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498257649Z     at 
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1349)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498259384Z     at 
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) 
> ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498261141Z     at 
> org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:191)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498262839Z     at 
> org.eclipse.jetty.server.handler.InetAccessHandler.handle(InetAccessHandler.java:177)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498264764Z     at 
> org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498266463Z     at 
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498268255Z     at 
> org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:322)
>  ~[jetty-rewrite-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498270019Z     at 
> org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:763)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498271731Z     at 
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
>  ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498273529Z     at 
> org.eclipse.jetty.server.Server.handle(Server.java:516) 
> ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498275200Z     at 
> org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:400) 
> ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498276916Z     at 
> org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:645) 
> ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498280031Z     at 
> org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:392) 
> ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498281801Z     at 
> org.eclipse.jetty.server.HttpChannel.run(HttpChannel.java:352) 
> ~[jetty-server-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498283614Z     at 
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:338)
>  ~[jetty-util-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498285393Z     at 
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:315)
>  ~[jetty-util-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498287105Z     at 
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:173)
>  ~[jetty-util-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498288832Z     at 
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:137)
>  ~[jetty-util-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498290595Z     at 
> org.eclipse.jetty.http2.HTTP2Connection.produce(HTTP2Connection.java:183) 
> ~[http2-common-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498292299Z     at 
> org.eclipse.jetty.http2.HTTP2Connection.onFillable(HTTP2Connection.java:138) 
> ~[http2-common-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498294101Z     at 
> org.eclipse.jetty.http2.HTTP2Connection$FillableCallback.succeeded(HTTP2Connection.java:361)
>  ~[http2-common-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498295817Z     at 
> org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105) 
> ~[jetty-io-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498297616Z     at 
> org.eclipse.jetty.io.ssl.SslConnection$DecryptedEndPoint.onFillable(SslConnection.java:555)
>  ~[jetty-io-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498299393Z     at 
> org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:410) 
> ~[jetty-io-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498301215Z     at 
> org.eclipse.jetty.io.ssl.SslConnection$2.succeeded(SslConnection.java:164) 
> ~[jetty-io-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498302961Z     at 
> org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105) 
> ~[jetty-io-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498304681Z     at 
> org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104) 
> ~[jetty-io-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498306569Z     at 
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:338)
>  ~[jetty-util-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498308515Z     at 
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:315)
>  ~[jetty-util-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498310213Z     at 
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:173)
>  ~[jetty-util-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498312037Z     at 
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)
>  ~[jetty-util-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498315161Z     at 
> org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:409)
>  ~[jetty-util-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498316924Z     at 
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)
>  ~[jetty-util-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498318652Z     at 
> org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)
>  ~[jetty-util-9.4.44.v20210927.jar:9.4.44.v20210927]
> 2022-09-09T12:31:56.498321549Z     at java.lang.Thread.run(Thread.java:833) 
> [?:?]
> {code}
> The reason is that two different class loaders are involved which are loading 
> classes from the same package.
> The first one:
> org.apache.solr.schema.ICUCollationField is in unnamed module of loader 
> java.net.FactoryURLClassLoader
> The second one:
> org.apache.solr.schema.IndexSchema is in unnamed module of loader 
> org.eclipse.jetty.webapp.WebAppClassLoader
> As described under [JVM 
> specs|https://docs.oracle.com/javase/specs/jvms/se11/html/jvms-5.html#jvms-5.3]
>  this will result in an IllegalAccessError even the classes are using the 
> same package.
> This is not allowed by the JVM.
> I think there are two possible solutions:
>  * Ensure the same class loader is used for both classes.
>  * Change the init method (line 128) of ICUCollationField to not directly 
> access the field luceneVersion directly (use the puplic method of 
> IndexSchema.getDefaultLuceneMatchVersion()



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