RE: Can add a regular check in DataNode on free disk space?

2014-10-20 Thread Dhiraj Kamble
Formatting NameNode will cause data loss – in effect you will lose all your data on DataNodes(rather access to data on DataNodes). NameNode will have no idea where your data(files) are stored. I don’t think that’s what you’re looking for. I am wondering why isn’t there any log information on

Redirect Writes/Reads to a particular Node

2014-10-13 Thread Dhiraj Kamble
Hi, Is it possible to redirect writes to one particular node i.e. store the primary replica always on the same node; and have reads served from this primary node. If the primary node goes down; then hadoop replication works as per its policy; but when this node comes up it should again become