I use Hbase-0.94 and hadoop-2.0.
I install one HDFS cluster that have 15 datanodes. If network bandwidth of
two datanodes is saturation(example 100m/s), writing performance of the entire
hdfs cluster is slow.
I think that the slow datanodes affect the writing performance of the entire
How does HDFS Client avoid writing data to the slow datanodes?