12.0p Strange DataSourceLoader exception

[Blama]

Sorry for the broken linefeeds, they appear OK in edit-mode.

Test1
Test2
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[Blama]

Hi Isomorphic,

out of nothing we started to get this error today (v12.0p_2020-03-11). I assume it's some race condition or something similar, because we did not change anything and it was only happening for one customer. Does this stack trace mean something to you?
I had a look at the .ds.xml and the only apparent thing is that it uses many (~70) fields with value map (2 of them with fmt tags (<value ID="W"><fmt:message key="won" /></value>)).

Two stacktraces, always appearing together:

javax.servlet.ServletException: DataSource 'T_STATUS_CHANGE' failed to load due to an exception on the server: Instantiation of class: java.util.LinkedHashMap$LinkedKeySet threw an InstantiationException - most likely cause is the class represents an abstract class, an interface, an array class, a primitive type, or void; or the class has no zero-argument constructor. See the server-side log for additional details. at com.isomorphic.servlet.DataSourceLoader.processRequest(DataSourceLoader.java:295) at com.isomorphic.servlet.DataSourceLoader.doGet(DataSourceLoader.java:110) at javax.servlet.http.HttpServlet.service(HttpServlet.java:634) at com.isomorphic.servlet.BaseServlet.service(BaseServlet.java:176) at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at com.lmscompany.lms.server.MimeTypeFilter.doFilter(MimeTypeFilter.java:26) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at com.lmscompany.lms.server.RequestLoggingFilter.doFilter(RequestLoggingFilter.java:41) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at com.lmscompany.lms.server.ExceptionLoggingFilter.doFilter(ExceptionLoggingFilter.java:28) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at com.isomorphic.servlet.CompressionFilter._doFilter(CompressionFilter.java:260) at com.isomorphic.servlet.BaseFilter.doFilter(BaseFilter.java:93) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.filters.HttpHeaderSecurityFilter.doFilter(HttpHeaderSecurityFilter.java:126) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.filters.HttpHeaderSecurityFilter.doFilter(HttpHeaderSecurityFilter.java:126) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:666) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.rewrite.RewriteValve.invoke(RewriteValve.java:555) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) at org.apache.catalina.ha.tcp.ReplicationValve.invoke(ReplicationValve.java:330) at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:747) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:367) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1639) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748)

java.lang.InstantiationException: Instantiation of class: java.util.LinkedHashMap$LinkedKeySet threw an InstantiationException - most likely cause is the class represents an abstract class, an interface, an array class, a primitive type, or void; or the class has no zero-argument constructor. at com.isomorphic.base.Reflection.newInstance(Reflection.java:230) at com.isomorphic.base.Reflection.newInstance(Reflection.java:193) at com.isomorphic.util.DataTools.deepClone(DataTools.java:490) at com.isomorphic.util.DataTools.deepClone(DataTools.java:486) at com.isomorphic.util.DataTools.deepClone(DataTools.java:493) at com.isomorphic.util.DataTools.deepClone(DataTools.java:486) at com.isomorphic.util.DataTools.deepClone(DataTools.java:486) at com.isomorphic.util.DataTools.deepClone(DataTools.java:486) at com.isomorphic.datasource.DataSource._cloneConfigForSecurityAnnotations(DataSource.java:1762) at com.isomorphic.servlet.DataSourceLoader.processRequest(DataSourceLoader.java:232) at com.isomorphic.servlet.DataSourceLoader.doGet(DataSourceLoader.java:110) at javax.servlet.http.HttpServlet.service(HttpServlet.java:634) at com.isomorphic.servlet.BaseServlet.service(BaseServlet.java:176) at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at com.lmscompany.lms.server.MimeTypeFilter.doFilter(MimeTypeFilter.java:26) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at com.lmscompany.lms.server.RequestLoggingFilter.doFilter(RequestLoggingFilter.java:41) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at com.lmscompany.lms.server.ExceptionLoggingFilter.doFilter(ExceptionLoggingFilter.java:28) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at com.isomorphic.servlet.CompressionFilter._doFilter(CompressionFilter.java:260) at com.isomorphic.servlet.BaseFilter.doFilter(BaseFilter.java:93) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.filters.HttpHeaderSecurityFilter.doFilter(HttpHeaderSecurityFilter.java:126) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.filters.HttpHeaderSecurityFilter.doFilter(HttpHeaderSecurityFilter.java:126) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:666) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.rewrite.RewriteValve.invoke(RewriteValve.java:555) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) at org.apache.catalina.ha.tcp.ReplicationValve.invoke(ReplicationValve.java:330) at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:747) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:367) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1639) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748)

Thank you & Best regards
Blama