Kamini Jagtiani Do you need anything else at this point, other than the instructions already provided to Donald to enable topology awareness for Query? Once Donald Haggart confirms things works, I am assuming we may need a bit more work to figure out upgrade/migration. We'll need to smooth transition from pre-7.1 to 7.1 so Query will need to be aware of compat mode and only once cluster is capable operating in 7.1 mode, you should activate topology aware capabilities. Till that point, query must operate in the current mode.

Meni Hillel,

Right now, I just created this improvement - for tracking changes needed to ns_server.

ceej confirmed that Donald Haggart was doing the right thing and the issue he was seeing with the toy build is a product issue.

For now, Donald Haggart will try out the fix, Dave had pointed us to. Once query starts getting notified of topology changes, we can start making the remaining query changes.
ns_server can then merge the topology changes -in co-ordination with query, at a later date.

Please assign to me once you've completed query side work

The query defect for this is:MB-40533

This bug is for ns_server bit.

Meni Hillel, I'm assigning this back to you as I've merged the Query service changes (MB-40533) and we're thus now ready for the ns_server side change.   (The ns_server change I made in the toy build I developed against can be found here http://review.couchbase.org/c/ns_server/+/157669)

Build couchbase-server-7.1.0-1139 contains ns_server commit b91ca38 with commit message:
MB-47511 make query service topology aware

Mihir Kamdar - Please review and close on the ticket, since test plans are implemented.