From 7f73e3e38f9b606574a2b7599e0b0f491b962587 Mon Sep 17 00:00:00 2001
From: Randolph Tan <randolph@10gen.com>
Date: Fri, 13 Mar 2015 14:37:04 -0400
Subject: SERVER-16987 sh.getRecentMigrations shows aborted migration as
 success

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---
 src/mongo/shell/utils_sh.js | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/mongo/shell/utils_sh.js b/src/mongo/shell/utils_sh.js
index 69ad01666b8..88f3abeb4ee 100644
--- a/src/mongo/shell/utils_sh.js
+++ b/src/mongo/shell/utils_sh.js
@@ -430,9 +430,16 @@ sh.getRecentFailedRounds = function() {
     return result;
 }
 
+/**
+ * Returns a summary of chunk migrations that was completed either successfully or not
+ * since yesterday. The format is an array of 2 arrays, where the first array contains
+ * the successful cases, and the second array contains the failure cases.
+ */
 sh.getRecentMigrations = function() {
     var configDB = db.getSiblingDB('config');
     var yesterday = new Date( new Date() - 24 * 60 * 60 * 1000 );
+
+    // Successful migrations.
     var result = configDB.changelog.aggregate([
         {
             $match: {
@@ -458,6 +465,7 @@ sh.getRecentMigrations = function() {
         }
     ]).toArray();
 
+    // Failed migrations.
     result = result.concat(configDB.changelog.aggregate([
         {
             $match: {
-- 
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