Has the table been compacted since loading the data?
I believe that the AccumuloInputFormat will use the splits on the table
you're reading to generate the MR InputSplits. The InputFormat should be
trying to run the Mappers on the same machine as the tserver serving the
data is located.
If you're only getting a few mappers, adding more splits to your table
should help. As your job runs, you can verify locality using the counters
that your Job creates using the JobTracker/ResourceManger web UI.
On 5/16/14, 1:32 PM, Russ Weeks wrote: