Merge pull request #3205 from edx/jibsheet/mongo-response-timeout

Specify a socket timeout for pymongo and lower the connect timeout.

playbooks/roles/edxapp/defaults/main.yml

@@ -681,6 +681,11 @@ edxapp_generic_doc_store_config: &edxapp_generic_default_docstore
   user: "{{ EDXAPP_MONGO_USER }}"
   collection:  'modulestore'
   ssl: "{{ EDXAPP_MONGO_USE_SSL }}"
+  # https://api.mongodb.com/python/2.9.1/api/pymongo/mongo_client.html#module-pymongo.mongo_client
+  socketTimeoutMS: 3000 # default is never timeout while the connection is open, this means it needs to explicitly close raising pymongo.errors.NetworkTimeout
+  connectTimeoutMS: 2000 # default is 20000, I believe raises pymongo.errors.ConnectionFailure
+  # Not setting waitQueueTimeoutMS and waitQueueMultiple since pymongo defaults to nobody being allowed to wait
+  
 
 EDXAPP_LMS_DRAFT_DOC_STORE_CONFIG:
   <<: *edxapp_generic_default_docstore