Hadoop - Hawq - Add new segment

Question

I installed hawq on Hadoop using ambari. in the installation step , I chose the Hawq master host with 2 segments , and all was working fine. then later, I added a new hawq segment using ambari , installation process went smoothly with no errors. but i realized that the new segment was not actually added to the hawq cluster and /data/hawq/segments directory is empty in this new node.

Am I missing any step to add the new segment to hawq cluster ?

any help or hint would be appreciated.

Answer 1

1. Can you clarify your HAWQ version?
2. I assume you mean adding a new HAWQ "node" not "segment"? HAWQ 1.x cannot dynamically add/remove segment number, which is pre-determined through HAWQ initialization
3. check: http://pivotalhd-210.docs.pivotal.io/doc/2010/ExpandingtheHAWQSystem.html it's a little bit old doc but you can cross-ref to see if this is what you intend to do.