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Date: Mon, 12 Aug 2013 11:04:25 +0100
From: Oussama Jilal <jilal.oussama@gmail.com>
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To: Apache Hbase <user@hbase.apache.org>
Subject: HBase/HDFS Data Nodes Management
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Hello everyone,

I have some questions that I wish to get answers to regarding how HBase 
and HDFS manages the data nodes.

Q1- Can I remove a node from a cluster without loosing data ?
Q2- If yes (Q1), does that depend on the replication of data between 
nodes or I don't need to worry about it even if data is not replicated ?
Q3- If no (Q1), is there a way to copy the data manually ?
Q4- If yes (Q3), can I copy to another node that contains data or does 
it have to be a new empty node ?

That is all I can think of right now ... any help is very appreciated, 
thank you.