I believe he means per node. Russell Jurney http://datasyndrome.com
On Oct 2, 2012, at 6:15 PM, hadoopman <hadoop...@gmail.com> wrote: > Only 24 map and 8 reduce tasks for 38 data nodes? are you sure that's right? > Sounds VERY low for a cluster that size. > > We have only 10 c2100's and are running I believe 140 map and 70 reduce slots > so far with pretty decent performance. > > > > On 10/02/2012 12:55 PM, Alexander Pivovarov wrote: >> 38 data nodes + 2 Name Nodes >> > > >> > > Data Node: >> > > Dell PowerEdge C2100 series >> > > 2 x XEON x5670 >> > > 48 GB RAM ECC (12x4GB 1333MHz) >> > > 12 x 2 TB 7200 RPM SATA HDD (with hot swap) JBOD >> > > Intel Gigabit ET Dual port PCIe x4 >> > > Redundant Power Supply >> > > Hadoop CDH3 >> > > max map tasks 24 >> > > max reduce tasks 8 >
