Hello, The problem has been identified - Many thanks for your help. We think the problem was caused by a high file transfer load between data nodes, which slowed down access to the files causing the jobs to hang. Cheers, Geoff --- Reply to this email directly or view it on GitHub: https://github.com/xrootd/xrootd/issues/253#issuecomment-119547948 ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-DEV list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-DEV&A=1