Hi Konstantinos, The typical deployment is, three Journal Nodes(JNs) and can collocate two of the three JNs on the same machine where Namenodes(2 NNs) are running. The third one can be deployed to the machine where ZK server is running(assume ZK cluster has 3 nodes). I'd recommend to have a dedicated disk for each JN server to use for edit log path as edit logs will be writing continuously.
It would be helpful if you could give more details of your Hadoop cluster size and components including ZK service etc. Thanks, Rakesh On Fri, Aug 12, 2016 at 3:12 PM, Konstantinos Tsakalozos < [email protected]> wrote: > Hi everyone, > > In an HA setup do you tend to co-host the journal service with other > services instead of having them on separate dedicated machines? If so, what > services do you pack together? > > Thank you, > Konstantinos >
