java.util.ConcurrentModificationException

XWiki.org JIRA | Dmitry Bakbardin | 5 years ago
  1. 0

    Any attempt to make duplication entry gives an error described below. No correct duplication check is done. How to reproduce: - make any application - make an entry - try to make another entry with the same name. - follow the error code: Error number 0 in 11: Uncaught exception Wrapped Exception: null com.xpn.xwiki.XWikiException: Error number 0 in 11: Uncaught exception Wrapped Exception: null at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:252) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:116) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:538) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1352) at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:128) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) at org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:144) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) at com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:68) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:217) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:109) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:476) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:517) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:225) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:937) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:871) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:247) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:149) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110) at org.eclipse.jetty.server.Server.handle(Server.java:346) at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:589) at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:1048) at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:601) at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:214) at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:411) at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:535) at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:40) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:529) at java.lang.Thread.run(Unknown Source) Wrapped Exception: java.util.ConcurrentModificationException at java.util.AbstractList$Itr.checkForComodification(Unknown Source) at java.util.AbstractList$Itr.next(Unknown Source) at com.xpn.xwiki.doc.XWikiDocument.setXObjects(XWikiDocument.java:2089) at com.xpn.xwiki.doc.XWikiDocument.mergeXObjects(XWikiDocument.java:2437) at com.xpn.xwiki.doc.XWikiDocument.readFromTemplate(XWikiDocument.java:3271) at com.xpn.xwiki.doc.XWikiDocument.readFromTemplate(XWikiDocument.java:3289) at com.xpn.xwiki.doc.XWikiDocument.readFromTemplate(XWikiDocument.java:3224) at com.xpn.xwiki.web.EditAction.render(EditAction.java:117) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:229) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:116) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:538) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1352) at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:128) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) at org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:144) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) at com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:68) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:217) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:109) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:476) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:517) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:225) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:937) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:871) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:247) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:149) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110) at org.eclipse.jetty.server.Server.handle(Server.java:346) at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:589) at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:1048) at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:601) at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:214) at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:411) at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:535) at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:40) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:529) at java.lang.Thread.run(Unknown Source)

    XWiki.org JIRA | 5 years ago | Dmitry Bakbardin
    java.util.ConcurrentModificationException
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  3. 0

    ConcurrentModicationException due to unsynchronized synchronized methods

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    Java: Changing the properties of an iterable object while iterating over it

    Stack Overflow | 7 years ago | Rosarch
    java.util.ConcurrentModificationException

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    Root Cause Analysis

    1. java.util.ConcurrentModificationException

      No message provided

      at java.util.AbstractList$Itr.checkForComodification()
    2. Java RT
      AbstractList$Itr.next
      1. java.util.AbstractList$Itr.checkForComodification(Unknown Source)
      2. java.util.AbstractList$Itr.next(Unknown Source)
      2 frames
    3. com.xpn.xwiki
      XWikiAction.execute
      1. com.xpn.xwiki.doc.XWikiDocument.setXObjects(XWikiDocument.java:2089)
      2. com.xpn.xwiki.doc.XWikiDocument.mergeXObjects(XWikiDocument.java:2437)
      3. com.xpn.xwiki.doc.XWikiDocument.readFromTemplate(XWikiDocument.java:3271)
      4. com.xpn.xwiki.doc.XWikiDocument.readFromTemplate(XWikiDocument.java:3289)
      5. com.xpn.xwiki.doc.XWikiDocument.readFromTemplate(XWikiDocument.java:3224)
      6. com.xpn.xwiki.web.EditAction.render(EditAction.java:117)
      7. com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:229)
      8. com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:116)
      8 frames
    4. struts
      ActionServlet.doGet
      1. org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
      2. org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
      3. org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
      4. org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
      4 frames
    5. JavaServlet
      HttpServlet.service
      1. javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
      2. javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
      2 frames
    6. Jetty
      ServletHandler$CachedChain.doFilter
      1. org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:538)
      2. org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1352)
      2 frames
    7. com.xpn.xwiki
      ActionFilter.doFilter
      1. com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:128)
      1 frame
    8. Jetty
      ServletHandler$CachedChain.doFilter
      1. org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)
      1 frame
    9. org.xwiki.wysiwyg
      ConversionFilter.doFilter
      1. org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:144)
      1 frame
    10. Jetty
      ServletHandler$CachedChain.doFilter
      1. org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)
      1 frame
    11. com.xpn.xwiki
      XWikiDavFilter.doFilter
      1. com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:68)
      1 frame
    12. Jetty
      ServletHandler$CachedChain.doFilter
      1. org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)
      1 frame
    13. org.xwiki.container
      SavedRequestRestorerFilter.doFilter
      1. org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:217)
      1 frame
    14. Jetty
      ServletHandler$CachedChain.doFilter
      1. org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)
      1 frame
    15. org.xwiki.container
      SetCharacterEncodingFilter.doFilter
      1. org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:109)
      1 frame
    16. Jetty
      HttpConnection.handle
      1. org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)
      2. org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:476)
      3. org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
      4. org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:517)
      5. org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:225)
      6. org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:937)
      7. org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406)
      8. org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183)
      9. org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:871)
      10. org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
      11. org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:247)
      12. org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:149)
      13. org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)
      14. org.eclipse.jetty.server.Server.handle(Server.java:346)
      15. org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:589)
      16. org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:1048)
      17. org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:601)
      18. org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:214)
      19. org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:411)
      19 frames
    17. GWT dev
      SelectChannelEndPoint$1.run
      1. org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:535)
      2. org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:40)
      2 frames
    18. Jetty
      QueuedThreadPool$3.run
      1. org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:529)
      1 frame
    19. Java RT
      Thread.run
      1. java.lang.Thread.run(Unknown Source)
      1 frame