Its a bad idea, Koert.
When multiple nodes are using the same principal (in this case all the
datanodes ) , it will result in server assuming that its a replay attack
and result in denial of service.
More details here :http://www.cloudera.com/content/cloudera-content/cloudera-docs/CDH4/4.2.1/CDH4-Security-Guide/cdh4sg_topic_17.html#concept_hfv_zqw_wj_unique_1
On Sun, Feb 2, 2014 at 3:14 PM, Koert Kuipers <[EMAIL PROTECTED]> wrote: