2 boxes for 2 NNs (better dedicated boxes)
min 3 JNs
min 3 ZKs
JNs and ZKs can share boxes with other services
On Wed, Nov 5, 2014 at 11:31 PM, Oleg Ruchovets oruchov...@gmail.com
wrote:
Hello.
We are using hortonwork distribution and want to evaluate HA capabilities.
Can community please
Our deployment is 15 data nodes and 2 NN. ZKs installed also as part of
hortonworks distributions.
Sorry for dummy question - what is JN is?
Can you please please point me on some manual wiki for installation /
configuration.
Thanks
Oleg.
On Thu, Nov 6, 2014 at 4:04 PM, Alexander Pivovarov
JN is the journalnode. You have to use it for HA. Like zookeeper, you
need odd numbers of JN.
Anyway ZKFC is neccessary too for automatic failover.
On 2014.11.06. 9:45, Oleg Ruchovets wrote:
Our deployment is 15 data nodes and 2 NN. ZKs installed also as part
of hortonworks distributions.
Great.
Thank you for the link.
Just to be sure - JN can be installed on data nodes like zookeeper?
If we have 2 Name Nodes and 15 Data Nodes - is it correct to install ZK
and JN on datanodes machines?
Thanks
Oleg.
On Thu, Nov 6, 2014 at 5:06 PM, Alexander Pivovarov apivova...@gmail.com
wrote:
Oleg,
why don’t you talk to me?
Put 1 ZK and 1 JN on NN boxes, third one on one of the data nodes.
HA wizard will automatically remove SNN from your cluster and put second NN in
it’s place instead.
If something does not work as you expected, give me a call.
Thank you!
Leonid Fedotov
Systems
For 17 box cluster it's probably good to run 5 ZKs and 5 JNs
So, run 2 ZKs on 2 NNs
3 ZKs on 3 DNs
same for JNs
you can start additional ZKs and JNs after you are done with initial
Enabling HA in Ambari
On Thu, Nov 6, 2014 at 3:01 AM, Oleg Ruchovets oruchov...@gmail.com wrote:
Great.
Hello.
We are using hortonwork distribution and want to evaluate HA capabilities.
Can community please share the best practices and potential problems?
Is it required additional hardware?
Thanks
Oleg.
