DuplicateFileEntryException when uploading a file with same name

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.4.3.57 CE GA57, Master
• Component/s: Document Repository Framework
• Labels: None
• Fix Priority: 3
• Git Pull Request: https://github.com/liferay-lima/liferay-portal/pull/3845
• Bug Type: Default

Steps to reproduce:

1. Add the property feature.flag.LPS-158675=true to portal-ext.properties
2. Start Bundle
3. Go to Design > Fragments
4. Add a fragment "TestFragment"
5. Go to Resource
6. Uploading a file a.txt
7. Uploading this file(a.txt) again.

Actual result:
DuplicateFileEntryException occurs in console.

2022-12-02 02:40:37.238 ERROR [http-nio-8080-exec-3][RepositoryBrowserServlet:261] null
javax.servlet.ServletException: com.liferay.document.library.kernel.exception.DuplicateFileEntryException: A file entry already exists with title a.txt
    at com.liferay.document.library.taglib.internal.servlet.RepositoryBrowserServlet.doPut(RepositoryBrowserServlet.java:235) ~[bundleFile:?]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:699) ~[servlet-api.jar:4.0.FR]
    at com.liferay.document.library.taglib.internal.servlet.RepositoryBrowserServlet.service(RepositoryBrowserServlet.java:258) [bundleFile:?]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:779) [servlet-api.jar:4.0.FR]
    at org.eclipse.equinox.http.servlet.internal.registration.EndpointRegistration.service(EndpointRegistration.java:153) [bundleFile:?]
    at org.eclipse.equinox.http.servlet.internal.servlet.ResponseStateHandler.processRequest(ResponseStateHandler.java:62) [bundleFile:?]
    at org.eclipse.equinox.http.servlet.internal.context.DispatchTargets.doDispatch(DispatchTargets.java:120) [bundleFile:?]
    at org.eclipse.equinox.http.servlet.internal.HttpServiceRuntimeImpl.doDispatch(HttpServiceRuntimeImpl.java:372) [bundleFile:?]
    at org.eclipse.equinox.http.servlet.internal.servlet.ProxyServlet.service(ProxyServlet.java:70) [bundleFile:?]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:779) [servlet-api.jar:4.0.FR]
    at com.liferay.portal.module.framework.ModuleFrameworkServletAdapter.service(ModuleFrameworkServletAdapter.java:54) [portal-impl.jar:?]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:779) [servlet-api.jar:4.0.FR]
    at com.liferay.shielded.container.internal.proxy.ServletWrapper.service(ServletWrapper.java:113) [com.liferay.shielded.container.impl.jar:?]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) [catalina.jar:9.0.68]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) [catalina.jar:9.0.68]
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) [tomcat-websocket.jar:9.0.68]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) [catalina.jar:9.0.68]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) [catalina.jar:9.0.68]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:124) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:147) [portal-kernel.jar:?]
    at com.liferay.change.tracking.internal.servlet.filter.CTCollectionPreviewFilter.processFilter(CTCollectionPreviewFilter.java:65) [bundleFile:?]
    at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:49) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:215) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:147) [portal-kernel.jar:?]
    at com.liferay.portal.upload.servlet.request.filter.internal.UploadServletRequestFilter.processFilter(UploadServletRequestFilter.java:118) [bundleFile:?]
    at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:49) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:215) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116) [portal-kernel.jar:?]
    at com.liferay.portal.remote.cors.internal.servlet.filter.PortalCORSServletFilter.processFilter(PortalCORSServletFilter.java:236) [bundleFile:?]
    at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:49) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:215) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116) [portal-kernel.jar:?]
    at com.liferay.portal.remote.jaxrs.whiteboard.internal.servlet.filter.JAXRSActivationFilter.doFilter(JAXRSActivationFilter.java:76) [bundleFile:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:215) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116) [portal-kernel.jar:?]
    at com.liferay.portal.servlet.filters.password.modified.PasswordModifiedFilter.processFilter(PasswordModifiedFilter.java:56) [portal-impl.jar:?]
    at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:49) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:215) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116) [portal-kernel.jar:?]
    at com.liferay.portal.servlet.filters.lockout.LockoutFilter.processFilter(LockoutFilter.java:58) [portal-impl.jar:?]
    at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:49) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:215) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:147) [portal-kernel.jar:?]
    at com.liferay.portal.servlet.filters.virtualhost.VirtualHostFilter.processFilter(VirtualHostFilter.java:245) [portal-impl.jar:?]
    at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:49) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:215) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:196) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:99) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:196) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:99) [portal-kernel.jar:?]
    at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176) [urlrewritefilter-4.0.4.jar:4.0.4]
    at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) [urlrewritefilter-4.0.4.jar:4.0.4]
    at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) [urlrewritefilter-4.0.4.jar:4.0.4]
    at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389) [urlrewritefilter-4.0.4.jar:4.0.4]
    at com.liferay.portal.url.rewrite.filter.internal.URLRewriteFilter.processFilter(URLRewriteFilter.java:99) [bundleFile:?]
    at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:49) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:215) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:175) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:99) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:175) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:99) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:196) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:99) [portal-kernel.jar:?]
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:104) [portal-kernel.jar:?]
    at com.liferay.shielded.container.internal.proxy.FilterWrapper.doFilter(FilterWrapper.java:79) [com.liferay.shielded.container.impl.jar:?]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) [catalina.jar:9.0.68]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) [catalina.jar:9.0.68]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197) [catalina.jar:9.0.68]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) [catalina.jar:9.0.68]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) [catalina.jar:9.0.68]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) [catalina.jar:9.0.68]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [catalina.jar:9.0.68]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) [catalina.jar:9.0.68]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360) [catalina.jar:9.0.68]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399) [tomcat-coyote.jar:9.0.68]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) [tomcat-coyote.jar:9.0.68]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) [tomcat-coyote.jar:9.0.68]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1789) [tomcat-coyote.jar:9.0.68]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-coyote.jar:9.0.68]
    at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) [tomcat-util.jar:9.0.68]
    at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) [tomcat-util.jar:9.0.68]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-util.jar:9.0.68]
    at java.lang.Thread.run(Thread.java:745) [?:1.8.0_121]
Caused by: com.liferay.document.library.kernel.exception.DuplicateFileEntryException: A file entry already exists with title a.txt
    at com.liferay.portlet.documentlibrary.service.impl.DLFileEntryLocalServiceImpl.validateFile(DLFileEntryLocalServiceImpl.java:1959) ~[portal-impl.jar:?]
    at com.liferay.portlet.documentlibrary.service.impl.DLFileEntryLocalServiceImpl._validateFile(DLFileEntryLocalServiceImpl.java:3454) ~[portal-impl.jar:?]
    at com.liferay.portlet.documentlibrary.service.impl.DLFileEntryLocalServiceImpl.addFileEntry(DLFileEntryLocalServiceImpl.java:248) ~[portal-impl.jar:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_121]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_121]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_121]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_121]
    at com.liferay.portal.kernel.bean.ClassLoaderBeanHandler.invoke(ClassLoaderBeanHandler.java:66) ~[portal-kernel.jar:?]
    at com.sun.proxy.$Proxy959.addFileEntry(Unknown Source) ~[?:?]
    at com.liferay.document.library.kernel.service.DLFileEntryLocalServiceWrapper.addFileEntry(DLFileEntryLocalServiceWrapper.java:72) ~[portal-kernel.jar:?]
    at com.liferay.document.library.internal.service.FriendlyURLDLFileEntryLocalServiceWrapper.addFileEntry(FriendlyURLDLFileEntryLocalServiceWrapper.java:63) ~[?:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_121]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_121]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_121]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_121]
    at com.liferay.portal.kernel.bean.ClassLoaderBeanHandler.invoke(ClassLoaderBeanHandler.java:66) ~[portal-kernel.jar:?]
    at com.sun.proxy.$Proxy960.addFileEntry(Unknown Source) ~[?:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_121]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_121]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_121]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_121]
    at com.liferay.portal.spring.aop.AopMethodInvocationImpl.proceed(AopMethodInvocationImpl.java:50) ~[portal-impl.jar:?]
    at com.liferay.portal.spring.transaction.TransactionInterceptor.invoke(TransactionInterceptor.java:69) ~[portal-impl.jar:?]
    at com.liferay.portal.spring.aop.AopMethodInvocationImpl.proceed(AopMethodInvocationImpl.java:57) ~[portal-impl.jar:?]
    at com.liferay.portal.service.ServiceContextAdvice.invoke(ServiceContextAdvice.java:60) ~[portal-impl.jar:?]
    at com.liferay.portal.spring.aop.AopMethodInvocationImpl.proceed(AopMethodInvocationImpl.java:57) ~[portal-impl.jar:?]
    at com.liferay.portal.spring.aop.AopInvocationHandler.invoke(AopInvocationHandler.java:49) ~[portal-impl.jar:?]
    at com.sun.proxy.$Proxy161.addFileEntry(Unknown Source) ~[?:?]
    at com.liferay.portlet.documentlibrary.service.impl.DLFileEntryServiceImpl.addFileEntry(DLFileEntryServiceImpl.java:85) ~[portal-impl.jar:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_121]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_121]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_121]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_121]
    at com.liferay.portal.spring.aop.AopMethodInvocationImpl.proceed(AopMethodInvocationImpl.java:50) ~[portal-impl.jar:?]
    at com.liferay.portal.spring.transaction.TransactionInterceptor.invoke(TransactionInterceptor.java:69) ~[portal-impl.jar:?]
    at com.liferay.portal.spring.aop.AopMethodInvocationImpl.proceed(AopMethodInvocationImpl.java:57) ~[portal-impl.jar:?]
    at com.liferay.portal.service.ServiceContextAdvice.invoke(ServiceContextAdvice.java:60) ~[portal-impl.jar:?]
    at com.liferay.portal.spring.aop.AopMethodInvocationImpl.proceed(AopMethodInvocationImpl.java:57) ~[portal-impl.jar:?]
    at com.liferay.portal.kernel.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:64) ~[portal-kernel.jar:?]
    at com.liferay.portal.spring.aop.AopMethodInvocationImpl.proceed(AopMethodInvocationImpl.java:57) ~[portal-impl.jar:?]
    at com.liferay.portal.spring.aop.AopInvocationHandler.invoke(AopInvocationHandler.java:49) ~[portal-impl.jar:?]
    at com.sun.proxy.$Proxy181.addFileEntry(Unknown Source) ~[?:?]
    at com.liferay.portal.repository.liferayrepository.LiferayRepository.addFileEntry(LiferayRepository.java:126) ~[portal-impl.jar:?]
    at com.liferay.portal.repository.util.RepositoryWrapper.addFileEntry(RepositoryWrapper.java:57) ~[portal-impl.jar:?]
    at com.liferay.portal.repository.util.RepositoryWrapper.addFileEntry(RepositoryWrapper.java:57) ~[portal-impl.jar:?]
    at com.liferay.portal.repository.liferayrepository.LiferayWorkflowRepositoryWrapper.addFileEntry(LiferayWorkflowRepositoryWrapper.java:52) ~[portal-impl.jar:?]
    at com.liferay.portal.repository.util.RepositoryWrapper.addFileEntry(RepositoryWrapper.java:57) ~[portal-impl.jar:?]
    at com.liferay.portal.repository.liferayrepository.LiferayProcessorRepositoryWrapper.addFileEntry(LiferayProcessorRepositoryWrapper.java:52) ~[portal-impl.jar:?]
    at com.liferay.portal.repository.capabilities.CapabilityRepository.addFileEntry(CapabilityRepository.java:68) ~[portal-impl.jar:?]
    at com.liferay.portlet.documentlibrary.service.impl.DLAppServiceImpl.addFileEntry(DLAppServiceImpl.java:289) ~[portal-impl.jar:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_121]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_121]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_121]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_121]
    at com.liferay.portal.kernel.bean.ClassLoaderBeanHandler.invoke(ClassLoaderBeanHandler.java:66) ~[portal-kernel.jar:?]
    at com.sun.proxy.$Proxy700.addFileEntry(Unknown Source) ~[?:?]
    at com.liferay.document.library.kernel.service.DLAppServiceWrapper.addFileEntry(DLAppServiceWrapper.java:181) ~[portal-kernel.jar:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_121]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_121]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_121]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_121]
    at com.liferay.portal.kernel.bean.ClassLoaderBeanHandler.invoke(ClassLoaderBeanHandler.java:66) ~[portal-kernel.jar:?]
    at com.sun.proxy.$Proxy701.addFileEntry(Unknown Source) ~[?:?]
    at com.liferay.document.library.kernel.service.DLAppServiceWrapper.addFileEntry(DLAppServiceWrapper.java:181) ~[portal-kernel.jar:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_121]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_121]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_121]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_121]
    at com.liferay.portal.kernel.bean.ClassLoaderBeanHandler.invoke(ClassLoaderBeanHandler.java:66) ~[portal-kernel.jar:?]
    at com.sun.proxy.$Proxy701.addFileEntry(Unknown Source) ~[?:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_121]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_121]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_121]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_121]
    at com.liferay.portal.spring.aop.AopMethodInvocationImpl.proceed(AopMethodInvocationImpl.java:50) ~[portal-impl.jar:?]
    at com.liferay.portal.spring.transaction.TransactionInterceptor.invoke(TransactionInterceptor.java:69) ~[portal-impl.jar:?]
    at com.liferay.portal.spring.aop.AopMethodInvocationImpl.proceed(AopMethodInvocationImpl.java:57) ~[portal-impl.jar:?]
    at com.liferay.portal.service.ServiceContextAdvice.invoke(ServiceContextAdvice.java:60) ~[portal-impl.jar:?]
    at com.liferay.portal.spring.aop.AopMethodInvocationImpl.proceed(AopMethodInvocationImpl.java:57) ~[portal-impl.jar:?]
    at com.liferay.portal.kernel.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:64) ~[portal-kernel.jar:?]
    at com.liferay.portal.spring.aop.AopMethodInvocationImpl.proceed(AopMethodInvocationImpl.java:57) ~[portal-impl.jar:?]
    at com.liferay.portal.spring.aop.AopInvocationHandler.invoke(AopInvocationHandler.java:49) ~[portal-impl.jar:?]
    at com.sun.proxy.$Proxy178.addFileEntry(Unknown Source) ~[?:?]
    at com.liferay.document.library.taglib.internal.servlet.RepositoryBrowserServlet.doPut(RepositoryBrowserServlet.java:190) ~[bundleFile:?]
    ... 86 more 

Expected result:
It should forbit user to upload a file with same name.