Automatic merge of gitlab-org/gitlab-ce master

app/finders/issuable_finder.rb

@@ -305,7 +305,7 @@ class IssuableFinder
   def use_subquery_for_search?
     strong_memoize(:use_subquery_for_search) do
       attempt_group_search_optimizations? &&
-        Feature.enabled?(:use_subquery_for_group_issues_search, default_enabled: false)
+        Feature.enabled?(:use_subquery_for_group_issues_search, default_enabled: true)
     end
   end
 

doc/install/installation.md

@@ -691,6 +691,11 @@ sudo nginx -t
 
 You should receive `syntax is okay` and `test is successful` messages. If you receive errors check your `gitlab` or `gitlab-ssl` Nginx config file for typos, etc. as indicated in the error message given.
 
+NOTE: **Note:**
+Verify that the installed version is greater than 1.12.1 by running `nginx -v`. If it's lower, you may receive the error below:
+`nginx: [emerg] unknown "start$temp=[filtered]$rest" variable
+nginx: configuration file /etc/nginx/nginx.conf test failed`
+
 ### Restart
 
 ```sh