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 Botzum
Senior Principal Technologist
WW Systems Engineering
MapR Technologies

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.