On Thu, Jun 11, 2009 at 6:10 PM, Bradford Stephens < [email protected]> wrote:
> > What I'm noticing is that it's writing to mostly one or two regions on > one box at a time, even though I have 7 reducers running. Monitoring > everything with dstat -v, I notice that only 2 of my servers are doing > much. These boxes have very low CPU idling, and high disk output (a > few GB a minute). > How many regions in your table? At first, there is one. All reducers will go against it. When it splits, then two regions field the 7 reducers and so on. You can manually split regions from the command-line. See if that helps: hbase> split_region 'REGIONNAME' (IIRC -- type 'tools' in shell for help on the admin facilities). St.Ack
