[S2GRAPH-24] Add counter config for readonly graph

• Type: Improvement
• Status: Done
• Priority: Minor
• Resolution: Done
• Assignee: Jaesang Kim
• Reporter: Jaesang Kim
• Created: 11/Jan/16 10:07
• Updated: 13/Jan/16 10:29
• Resolved: 13/Jan/16 10:29

Description

Motivation:
S2Counter use the s2graph as the storage of counting values.
In some cases, the graph servers are separated into write-only and read-only servers. However, counter use the only one config for the graph url. So, we need to add a additional config for read-only graph server.