[xwiki-users] Upload of files >2GB fails

Hello, I've run into a problem with uploading files to my XWiki. I am running XWiki v8.0 on a CentOS 7 server, using a Java 8 64bit JVM and the jetty servlet container. The database resides on a MS-SQL 2008 R2 server. The following options are set on my installation: start_xwiki.sh: XWIKI_OPTS="-Xmx2048m -XX:MaxPermSize=2048m" MaxPermSize is ignored by Java 8 xwiki.cfg: xwiki.store.attachment.hint=file xwiki.store.attachment.versioning.hint=file xwiki.store.attachment.recyclebin.hint=file XWiki Preferences: Maximum Upload Size = 4294967296 If I upload a file via the browser, the actual size of the file is shown correct, but after the upload has finished, the file size is shown incorrectly as -[random_number]. Downloading the same file, results in getting a defective file, truncated at 2Gb in size. The log reports no errors. I've tried uploading the same file via the WebDAV extension, which gets me a Java Out-of-Memory-Exception, resulting in a 0 byte file on the server. Do you have any other ideas on how to get files bigger than 2GB uploaded to the wiki? Best Regards Bernhard