jsonIter is not fully threadsafe or at least it is hard to ensure threadsafety due to the use of a lot of static fields (e. g. JsonIterator.isStreamingEnabled). The classloading problem might be an incompatibility with the javassist version. Most of the times it disappears after a reboot. We're going to replace jsonIter with gson which seems to be easier to work with in multithreaded environments.
jsonIter is not fully threadsafe or at least it is hard to ensure threadsafety due to the use of a lot of static fields (e. g. JsonIterator.isStreamingEnabled). The classloading problem might be an incompatibility with the javassist version. Most of the times it disappears after a reboot. We're going to replace jsonIter with gson which seems to be easier to work with in multithreaded environments.