From d63bd944ac98fa36c87b1257b2a42e092ea1cd03 Mon Sep 17 00:00:00 2001
From: YuviPanda <yuvipanda@gmail.com>
Date: Thu, 10 Nov 2016 10:39:44 -0800
Subject: [PATCH] Add clarifying comment about limit / guarantee env variables

---
 jupyterhub/spawner.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/jupyterhub/spawner.py b/jupyterhub/spawner.py
index 8e771e9d..29d12c5d 100644
--- a/jupyterhub/spawner.py
+++ b/jupyterhub/spawner.py
@@ -322,6 +322,9 @@ class Spawner(LoggingConfigurable):
         env['JPY_API_TOKEN'] = self.api_token
 
         # Put in limit and guarantee info if they exist.
+        # Note that this is for use by the humans / notebook extensions in the
+        # single-user notebook server, and not for direct usage by the spawners
+        # themselves. Spawners should just use the traitlets directly.
         if self.mem_limit:
             env['LIMIT_MEM'] = str(self.mem_limit)
         if self.mem_guarantee: