XStream
  1. XStream
  2. XSTR-472

ConcurrentModificationException thrown when serialising objects in a hashmap

    Details

    • Type: Bug Bug
    • Status: Closed Closed
    • Priority: Blocker Blocker
    • Resolution: Won't Fix
    • Affects Version/s: 1.2.2
    • Fix Version/s: None
    • Component/s: Converters
    • Labels:
      None
    • JDK version and platform:
      Sun 1.5.0 for Unix

      Description

      Hi,

      We are using X-stream for (de)serializing a user's session to files on a web based Unix application. There are a large number of users and when they start hitting the application hard, we get the following error:

      java.util.ConcurrentModificationException
      at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:449)
      at java.util.AbstractList$Itr.next(AbstractList.java:420)
      at com.thoughtworks.xstream.converters.collections.CollectionConverter.marshal(CollectionConverter.java:43)
      at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:55)
      at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:50)
      at com.thoughtworks.xstream.annotations.AnnotationReflectionConverter.marshallField(AnnotationReflectionConverter.java:40)
      at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.jav
      a:108)
      at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.visit(AbstractReflectionConverter.java:84)
      at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.visitSerializableFields(PureJavaReflectionPro
      vider.java:109)
      at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:6
      9)
      at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:42)
      at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:55)
      at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:50)
      at com.thoughtworks.xstream.core.TreeMarshaller.start(TreeMarshaller.java:73)
      at com.thoughtworks.xstream.core.ReferenceByXPathMarshallingStrategy.marshal(ReferenceByXPathMarshallingStrategy.java:34)
      at com.thoughtworks.xstream.XStream.marshal(XStream.java:751)
      at com.thoughtworks.xstream.XStream.marshal(XStream.java:740)
      at com.thoughtworks.xstream.XStream.toXML(XStream.java:721)
      at com.thoughtworks.xstream.XStream.toXML(XStream.java:711)

      A user's "session" is stored in a hashmap and retrieved, updated on every request. Please can someone help as this is a show stopper! Thanks

        People

        • Assignee:
          Jörg Schaible
          Reporter:
          johnson_dang@hotmail.com
        • Votes:
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          Dates

          • Created:
            Updated:
            Resolved: