diff --git a/src/scheduler.js b/src/scheduler.js
index 080bf15ce..ae87bfc77 100644
--- a/src/scheduler.js
+++ b/src/scheduler.js
@@ -20,6 +20,7 @@ let apps = require('./apps.js'),
 let gState = { };
 let gSuspendedAppIds = new Set(); // suspended because some apptask is running
 
+// TODO: this should probably also stop existing jobs to completely prevent race but the code is not re-entrant
 function suspendJobs(appId) {
     debug(`suspendJobs: ${appId}`);
     gSuspendedAppIds.add(appId);