Order by/limit clause on partitioned data

[Sachin Katakdound]

Let’s say we have a simple (phoenix table) data set.

create table ADDRESS(“id” NUMBER primary key,
        “city” VARCHAR,
        "state” VARCHAR,
        “zip”   VARCHAR) SALT_BUCKETS=4

And lets suppose there are 4 different region servers, and this data set is 
spread across 4 separate regions.

Now, the following query is run;
select * from ADDRESS order by “city” limit 15;

When this simple query with Order by and limit clause is executed, does it 
return a valid data considering the fact that the data will be spread across 4 
region servers?

I believe the query plan indicates “ordering on the server” and then limit 
clause on the client. 

Does this mean that 15 rows are gathered from each region server and then the 
limit clause applied on the client?
How exactly is this query executed?

Thanks in advance.

Regards,
Sachin