hbase-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Oussama Jilal <jilal.ouss...@gmail.com>
Subject Re: HBase/HDFS Data Nodes Management
Date Tue, 13 Aug 2013 09:15:24 GMT
Thank you Jean-Marc.

On 08/12/2013 11:54 AM, Jean-Marc Spaggiari wrote:
> Hi Oussama.
>
> 1) That's all the goal of Hadoop and HBase ;) You might want to ready
> Hadoop the Definitive guide and HBase the Definitive guide...
> 2) HBase is based on Hadoop and take advantage of it's repplication process.
> 3) There is also a way to backup the data manually or to configure
> replication between different clusters.
> 4) There is no need to copy between nodes. Backup is more between an
> external server and the cluster, or between 2 clusters.
>
> HTH.
>
> JM
>
> 2013/8/12 Oussama Jilal <jilal.oussama@gmail.com>
>
>> 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.
>>


Mime
View raw message