From 8371b23f1b0c76a0a2da227022cd9c4e847eafca Mon Sep 17 00:00:00 2001
From: Tess Avitabile <tess.avitabile@mongodb.com>
Date: Fri, 24 May 2019 09:47:29 -0400
Subject: SERVER-41247 ReplSetTests that specify setParameter as a string must
 still disable periodic noop writer

(cherry picked from commit 445872c8ab7e073b67b87a56180c685b24d81d49)
---
 src/mongo/shell/replsettest.js | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/mongo/shell/replsettest.js b/src/mongo/shell/replsettest.js
index a94633dca8e..116dca90c56 100644
--- a/src/mongo/shell/replsettest.js
+++ b/src/mongo/shell/replsettest.js
@@ -1884,7 +1884,17 @@ var ReplSetTest = function(opts) {
 
         // Turn off periodic noop writes for replica sets by default.
         options.setParameter = options.setParameter || {};
+        if (typeof(options.setParameter) === "string") {
+            var eqIdx = options.setParameter.indexOf("=");
+            if (eqIdx != -1) {
+                var param = options.setParameter.substring(0, eqIdx);
+                var value = options.setParameter.substring(eqIdx + 1);
+                options.setParameter = {};
+                options.setParameter[param] = value;
+            }
+        }
         options.setParameter.writePeriodicNoops = options.setParameter.writePeriodicNoops || false;
+
         options.setParameter.numInitialSyncAttempts =
             options.setParameter.numInitialSyncAttempts || 1;
         // We raise the number of initial sync connect attempts for tests that disallow chaining.
-- 
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