Sure, I did. It's actually not what I'm looking for. I don't want to spend time to make dead NN alive by my hands. There should be a solution for NN-SPOF problem.

On 07/02/2015 04:36 PM, Vinayakumar B wrote:
Hi..
Did you look at the HDFS Namenode high availability?

-Vinay
On Jul 2, 2015 11:50 AM, "Dmitry Salychev" <darkness....@gmail.com> wrote:

Hello, HDFS Developers.

I know that NN is a single point of failure of an entire HDFS cluster. If
it fails, the cluster will be unavailable no matter how many DN there. I
know that there is an initiative <
http://www.wandisco.com/system/files/documentation/Meetup-ConsensusReplication.pdf>
which introduces ConsensusNode (as I can see it looks like distributed NN)
and related issues (HDFS-6469 <
https://issues.apache.org/jira/browse/HDFS-6469>, HADOOP-10641 <
https://issues.apache.org/jira/browse/HADOOP-10641> and HDFS-7007 <
https://issues.apache.org/jira/browse/HDFS-7007>). So, I'd like to ask.

Has this NN-SPOF problem been solved? If it hasn't, can you show me an
entry point where I can help to solve it?

Thanks for your time.




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