SERVER-34614: Create a new db connection for each test when running in parallel

(cherry picked from commit 7e4f6276ec553354e2b88a209e3000ea7f729513)

1 files changed, 4 insertions, 0 deletions

diff --git a/jstests/libs/parallelTester.js b/jstests/libs/parallelTester.js
index 2837af9ecbd..010715bed40 100644
--- a/jstests/libs/parallelTester.js
+++ b/jstests/libs/parallelTester.js
@@ -296,6 +296,10 @@ if (typeof _threadInject != "undefined") {
         args.forEach(function(x) {
             print("         S" + suite + " Test : " + x + " ...");
             var time = Date.timeFunc(function() {
+                // Create a new connection to the db for each file. If tests share the same
+                // connection it can create difficult to debug issues.
+                db = new Mongo(db.getMongo().host).getDB(db.getName());
+                gc();
                 load(x);
             }, 1);
             print("         S" + suite + " Test : " + x + " " + time + "ms");