On each of the processing nodes in our cluster we have running 1) HDFS (datanode), 2) Accumulo (tablet server), and 3) Hadoop. Since Accumulo depends on the HDFS, and Hadoop depends on the HDFS and sometimes on Accumulo, we are considering setting the niceness of HDFS to 0 (the current value), Accumulo to 1, and Hadoop to 2 on each of the nodes. The objective is to improve the real time performance of Accumulo.
Does anyone have experience configuring their cluster in a similar manner that they can share? Are there any serious cons to doing this?
