Support Questions
Find answers, ask questions, and share your expertise
Announcements
Alert: Welcome to the Unified Cloudera Community. Former HCC members be sure to read and learn how to activate your account here.

Can you add a ha namenode without cluster downtime?

Solved Go to solution
Highlighted

Can you add a ha namenode without cluster downtime?

New Contributor

Currently we have no HA on the name node in a HDP 2.2 cluster in production.

We are trying to determine if we can add a new node and enable it has a standby namenode.

Our objective is to enable namenode HA on the hortonworks cluster without taking the cluster offline.

1 ACCEPTED SOLUTION

Accepted Solutions

Re: Can you add a ha namenode without cluster downtime?

@S Roy

No as we have to run checkpoint on the NN and save the namespace. You have to have downtime to enable HA

5 REPLIES 5

Re: Can you add a ha namenode without cluster downtime?

@S Roy

No as we have to run checkpoint on the NN and save the namespace. You have to have downtime to enable HA

Re: Can you add a ha namenode without cluster downtime?

Re: Can you add a ha namenode without cluster downtime?

New Contributor

We have a process which pulls messages from MQ and puts it in HBase. Since the messages have a 10 sec expiry we cannot afford to have the cluster down. What do people do in such situations?

Re: Can you add a ha namenode without cluster downtime?

@S Roy Please post it as new question :) I will try to answer

Re: Can you add a ha namenode without cluster downtime?