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MapReduce, mail # user - Specific HDFS tasks where is passwordless SSH is necessary


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Specific HDFS tasks where is passwordless SSH is necessary
Jay Vyas 2013-02-05, 23:06
When setting up passwordless ssh on a cluster, its clear that the namenode
needs to be able to ssh into task trackers to start/stop nodes and restart
the cluster.

What else is passwordless SSH used for?  Do TaskTrackers/DataNodes ever SSH
into each other horizontally ? Or is SSH only used for one-way nn to tt
operations?

--
Jay Vyas
http://jayunit100.blogspot.com
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Robert Dyer 2013-02-05, 23:37
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Harsh J 2013-02-05, 23:55