Can you share the program? I can try running it and answer your question. I can also of course check with MapR engineering to see if that's the issue. Much appreciated, Keys ________________________________ Keys Botzum Senior Principal Technologist WW Systems Engineering kbotzum@maprtech.com 443-718-0098 MapR Technologies http://www.mapr.com On Mar 30, 2012, at 4:48 PM, Billie J Rinaldi wrote: > On Friday, March 30, 2012 2:07:49 PM, "Keys Botzum" wrote: >> 30 11:00:15,778 [tabletserver.Tablet] ERROR: Failed to find lastkey >> Seeking beyond EOF, filelen 733, wantpos 733 > > It looks like Accumulo is trying to seek to the last position in a file. I just wrote a little program that opens a file in HDFS and seeks to its file length, and it didn't throw an error. Does MapR not allow this? If that is the desired MapR behavior, we could try to determine whether Accumulo could avoid performing that seek. > > Billie