Hi, We have an application running on Drools-5.5.0.Final. We are unexpectedly getting the following exception continuously. After the occurrence of this exception there is no impact on the application but sometimes application complains for "Unexpected Process Definition Exception" but that is rear. We need to resolve this issue before going live, still if the below exception has no harm. Can anyone help in this regard as what might be the issue. 07:06:46,745 INFO [org.drools.guvnor.server.security.SecurityServiceImpl] (http--0.0.0.0-8080-8) Logging in user [admin] 07:06:46,748 INFO [org.drools.guvnor.server.security.DemoAuthenticator] (http--0.0.0.0-8080-8) Demo login for user (admin) succeeded. 07:06:46,751 INFO [org.apache.jackrabbit.core.TransientRepository] (http--0.0.0.0-8080-8) Session opened 07:06:46,754 INFO [stdout] (http--0.0.0.0-8080-8) =============== session-admin-15249 07:06:46,756 INFO [stdout] (http--0.0.0.0-8080-8) =============== session-admin-15249 07:06:46,758 INFO [stdout] (http--0.0.0.0-8080-8) =============== session-admin-15249 07:06:46,777 INFO [org.apache.jackrabbit.core.TransientRepository] (http--0.0.0.0-8080-8) Session closed 07:06:48,688 INFO [org.drools.guvnor.server.security.SecurityServiceImpl] (http--0.0.0.0-8080-8) Logging in user [admin] 07:06:48,691 INFO [org.drools.guvnor.server.security.DemoAuthenticator] (http--0.0.0.0-8080-8) Demo login for user (admin) succeeded. 07:06:48,694 INFO [org.apache.jackrabbit.core.TransientRepository] (http--0.0.0.0-8080-8) Session opened 07:06:48,697 INFO [stdout] (http--0.0.0.0-8080-8) =============== session-admin-15250 07:06:48,703 INFO [org.apache.jackrabbit.core.TransientRepository] (http--0.0.0.0-8080-8) Session closed 07:06:48,709 INFO [org.drools.guvnor.server.security.SecurityServiceImpl] (http--0.0.0.0-8080-8) Logging in user [admin] 07:06:48,712 INFO [org.drools.guvnor.server.security.DemoAuthenticator] (http--0.0.0.0-8080-8) Demo login for user (admin) succeeded. 07:06:48,715 INFO [org.apache.jackrabbit.core.TransientRepository] (http--0.0.0.0-8080-8) Session opened 07:06:48,717 INFO [stdout] (http--0.0.0.0-8080-8) =============== session-admin-15251 07:06:48,719 INFO [stdout] (http--0.0.0.0-8080-8) =============== session-admin-15251 07:06:48,721 INFO [stdout] (http--0.0.0.0-8080-8) =============== session-admin-15251 07:06:48,743 INFO [org.apache.jackrabbit.core.TransientRepository] (http--0.0.0.0-8080-8) Session closed 07:06:48,780 ERROR [org.drools.guvnor.server.files.PackageDeploymentServlet] (http--0.0.0.0-8080-5) null: ClientAbortException: java.net.SocketException: Connection reset at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:403) [jbossweb-7.0.10.Final.jar:] at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:354) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:426) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:415) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:89) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:83) [jbossweb-7.0.10.Final.jar:] at org.drools.guvnor.server.files.PackageDeploymentServlet$1.execute(PackageDeploymentServlet.java:272) [classes:5.5.0.Final] at org.drools.guvnor.server.files.RepositoryServlet.doAuthorizedAction(RepositoryServlet.java:59) [guvnor-webapp-core-5.5.0.Final.jar:5.5.0.Final] at org.drools.guvnor.server.files.PackageDeploymentServlet.doGet(PackageDeploymentServlet.java:139) [classes:5.5.0.Final] at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final] at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.10.Final.jar:] at org.jboss.weld.servlet.ConversationPropagationFilter.doFilter(ConversationPropagationFilter.java:62) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.10.Final.jar:] at org.jboss.solder.servlet.exception.CatchExceptionFilter.doFilter(CatchExceptionFilter.java:65) [solder-impl-3.1.1.Final.jar:3.1.1.Final] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.10.Final.jar:] at org.jboss.solder.servlet.event.ServletEventBridgeFilter.doFilter(ServletEventBridgeFilter.java:74) [solder-impl-3.1.1.Final.jar:3.1.1.Final] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.10.Final.jar:] at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:154) [jboss-as-web-7.1.0.Final.jar:7.1.0.Final] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:567) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) [jbossweb-7.0.10.Final.jar:] at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.10.Final.jar:] at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) [jbossweb-7.0.10.Final.jar:] at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) [jbossweb-7.0.10.Final.jar:] at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_30] Caused by: java.net.SocketException: Connection reset at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:96) [rt.jar:1.6.0_30] at java.net.SocketOutputStream.write(SocketOutputStream.java:136) [rt.jar:1.6.0_30] at org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:724) [jbossweb-7.0.10.Final.jar:] at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:449) [jbossweb-7.0.10.Final.jar:] at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:349) [jbossweb-7.0.10.Final.jar:] at org.apache.coyote.http11.InternalOutputBuffer$OutputStreamOutputBuffer.doWrite(InternalOutputBuffer.java:748) [jbossweb-7.0.10.Final.jar:] at org.apache.coyote.http11.filters.IdentityOutputFilter.doWrite(IdentityOutputFilter.java:118) [jbossweb-7.0.10.Final.jar:] at org.apache.coyote.http11.InternalOutputBuffer.doWrite(InternalOutputBuffer.java:559) [jbossweb-7.0.10.Final.jar:] at org.apache.coyote.Response.doWrite(Response.java:594) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:398) [jbossweb-7.0.10.Final.jar:] ... 33 more 07:06:48,849 WARN [org.drools.guvnor.server.repository.RulesRepositoryManager] (http--0.0.0.0-8080-8) Creating RulesRepository with default username. 07:06:48,786 ERROR [org.drools.guvnor.server.files.PackageDeploymentServlet] (http--0.0.0.0-8080-7) null: ClientAbortException: java.net.SocketException: Connection reset at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:403) [jbossweb-7.0.10.Final.jar:] at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:354) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:426) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:415) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:89) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:83) [jbossweb-7.0.10.Final.jar:] at org.drools.guvnor.server.files.PackageDeploymentServlet$1.execute(PackageDeploymentServlet.java:272) [classes:5.5.0.Final] at org.drools.guvnor.server.files.RepositoryServlet.doAuthorizedAction(RepositoryServlet.java:59) [guvnor-webapp-core-5.5.0.Final.jar:5.5.0.Final] at org.drools.guvnor.server.files.PackageDeploymentServlet.doGet(PackageDeploymentServlet.java:139) [classes:5.5.0.Final] at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final] at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.10.Final.jar:] at org.jboss.weld.servlet.ConversationPropagationFilter.doFilter(ConversationPropagationFilter.java:62) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.10.Final.jar:] at org.jboss.solder.servlet.exception.CatchExceptionFilter.doFilter(CatchExceptionFilter.java:65) [solder-impl-3.1.1.Final.jar:3.1.1.Final] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.10.Final.jar:] at org.jboss.solder.servlet.event.ServletEventBridgeFilter.doFilter(ServletEventBridgeFilter.java:74) [solder-impl-3.1.1.Final.jar:3.1.1.Final] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.10.Final.jar:] at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:154) [jboss-as-web-7.1.0.Final.jar:7.1.0.Final] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:567) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) [jbossweb-7.0.10.Final.jar:] at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.10.Final.jar:] at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) [jbossweb-7.0.10.Final.jar:] at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) [jbossweb-7.0.10.Final.jar:] at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_30] Caused by: java.net.SocketException: Connection reset at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:96) [rt.jar:1.6.0_30] at java.net.SocketOutputStream.write(SocketOutputStream.java:136) [rt.jar:1.6.0_30] at org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:724) [jbossweb-7.0.10.Final.jar:] at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:449) [jbossweb-7.0.10.Final.jar:] at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:349) [jbossweb-7.0.10.Final.jar:] at org.apache.coyote.http11.InternalOutputBuffer$OutputStreamOutputBuffer.doWrite(InternalOutputBuffer.java:748) [jbossweb-7.0.10.Final.jar:] at org.apache.coyote.http11.filters.IdentityOutputFilter.doWrite(IdentityOutputFilter.java:118) [jbossweb-7.0.10.Final.jar:] at org.apache.coyote.http11.InternalOutputBuffer.doWrite(InternalOutputBuffer.java:559) [jbossweb-7.0.10.Final.jar:] at org.apache.coyote.Response.doWrite(Response.java:594) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:398) [jbossweb-7.0.10.Final.jar:] ... 33 more 07:06:48,874 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/drools-guvnor].[PackageDeploymentServlet]] (http--0.0.0.0-8080-5) Servlet.service() for servlet PackageDeploymentServlet threw exception: java.lang.RuntimeException: ClientAbortException: java.net.SocketException: Connection reset at org.drools.guvnor.server.files.RepositoryServlet.doAuthorizedAction(RepositoryServlet.java:67) [guvnor-webapp-core-5.5.0.Final.jar:5.5.0.Final] at org.drools.guvnor.server.files.PackageDeploymentServlet.doGet(PackageDeploymentServlet.java:139) [classes:5.5.0.Final] at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final] at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.10.Final.jar:] at org.jboss.weld.servlet.ConversationPropagationFilter.doFilter(ConversationPropagationFilter.java:62) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.10.Final.jar:] at org.jboss.solder.servlet.exception.CatchExceptionFilter.doFilter(CatchExceptionFilter.java:65) [solder-impl-3.1.1.Final.jar:3.1.1.Final] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.10.Final.jar:] at org.jboss.solder.servlet.event.ServletEventBridgeFilter.doFilter(ServletEventBridgeFilter.java:74) [solder-impl-3.1.1.Final.jar:3.1.1.Final] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.10.Final.jar:] at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:154) [jboss-as-web-7.1.0.Final.jar:7.1.0.Final] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:567) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) [jbossweb-7.0.10.Final.jar:] at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.10.Final.jar:] at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) [jbossweb-7.0.10.Final.jar:] at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) [jbossweb-7.0.10.Final.jar:] at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_30] Caused by: ClientAbortException: java.net.SocketException: Connection reset at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:403) [jbossweb-7.0.10.Final.jar:] at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:354) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:426) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:415) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:89) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:83) [jbossweb-7.0.10.Final.jar:] at org.drools.guvnor.server.files.PackageDeploymentServlet$1.execute(PackageDeploymentServlet.java:272) [classes:5.5.0.Final] at org.drools.guvnor.server.files.RepositoryServlet.doAuthorizedAction(RepositoryServlet.java:59) [guvnor-webapp-core-5.5.0.Final.jar:5.5.0.Final] ... 26 more Caused by: java.net.SocketException: Connection reset at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:96) [rt.jar:1.6.0_30] at java.net.SocketOutputStream.write(SocketOutputStream.java:136) [rt.jar:1.6.0_30] at org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:724) [jbossweb-7.0.10.Final.jar:] at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:449) [jbossweb-7.0.10.Final.jar:] at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:349) [jbossweb-7.0.10.Final.jar:] at org.apache.coyote.http11.InternalOutputBuffer$OutputStreamOutputBuffer.doWrite(InternalOutputBuffer.java:748) [jbossweb-7.0.10.Final.jar:] at org.apache.coyote.http11.filters.IdentityOutputFilter.doWrite(IdentityOutputFilter.java:118) [jbossweb-7.0.10.Final.jar:] at org.apache.coyote.http11.InternalOutputBuffer.doWrite(InternalOutputBuffer.java:559) [jbossweb-7.0.10.Final.jar:] at org.apache.coyote.Response.doWrite(Response.java:594) [jbossweb-7.0.10.Final.jar:] at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:398) [jbossweb-7.0.10.Final.jar:] ... 33 more 07:06:48,873 INFO [org.apache.jackrabbit.core.TransientRepository] (http--0.0.0.0-8080-8) Session opened Thanks and Best Regards, Zahid Ahmed