From 7ab04731ab63f62f5e06d6007795779a0056e36b Mon Sep 17 00:00:00 2001
From: Benety Goh <benety@mongodb.com>
Date: Wed, 8 Jan 2020 14:05:59 +0000
Subject: SERVER-44821 accessing db.system.profile and currentOp storage stats
 should not conflict with slow oplog application

---
 .../noPassthrough/currentop_secondary_slow_op.js   | 64 ++++++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 jstests/noPassthrough/currentop_secondary_slow_op.js

(limited to 'jstests')

diff --git a/jstests/noPassthrough/currentop_secondary_slow_op.js b/jstests/noPassthrough/currentop_secondary_slow_op.js
new file mode 100644
index 00000000000..66e83520056
--- /dev/null
+++ b/jstests/noPassthrough/currentop_secondary_slow_op.js
@@ -0,0 +1,64 @@
+/**
+ * Confirms slow currentOp logging does not conflict with applying an oplog batch.
+ * @tags: [requires_replication]
+ */
+(function() {
+"use strict";
+
+const rst = new ReplSetTest({
+    nodes: [
+        {},
+        {
+            // Disallow elections on secondary.
+            rsConfig: {
+                priority: 0,
+                votes: 0,
+            },
+            slowms: 30000,  // Don't log slow operations on secondary.
+        },
+    ]
+});
+const nodes = rst.startSet();
+rst.initiate();
+
+const primary = rst.getPrimary();
+const testDB = primary.getDB('test');
+const coll = testDB.getCollection('test');
+
+assert.commandWorked(coll.insert({_id: 'a'}));
+
+const secondary = rst.getSecondary();
+const secondaryDB = secondary.getDB(testDB.getName());
+assert.commandWorked(secondaryDB.adminCommand({
+    configureFailPoint: 'hangAfterCollectionInserts',
+    mode: 'alwaysOn',
+    data: {
+        collectionNS: coll.getFullName(),
+        first_id: 'b',
+    },
+}));
+
+try {
+    assert.commandWorked(coll.insert({_id: 'b'}));
+    checkLog.contains(secondary,
+                      'hangAfterCollectionInserts fail point enabled for ' + coll.getFullName());
+
+    jsTestLog('Running currentOp() with slow operation logging.');
+    // Lower slowms to make currentOp() log slow operation while the secondary is procesing the
+    // commitIndexBuild oplog entry during oplog application.
+    // Use admin db on secondary to avoid lock conflict with inserts in test db.
+    const secondaryAdminDB = secondaryDB.getSiblingDB('admin');
+    const profileResult = assert.commandWorked(secondaryAdminDB.setProfilingLevel(0, {slowms: -1}));
+    jsTestLog('Configured profiling to always log slow ops: ' + tojson(profileResult));
+    const currentOpResult = assert.commandWorked(secondaryAdminDB.currentOp());
+    jsTestLog('currentOp() with slow operation logging: ' + tojson(currentOpResult));
+    assert.commandWorked(
+        secondaryAdminDB.setProfilingLevel(profileResult.was, {slowms: profileResult.slowms}));
+    jsTestLog('Completed currentOp() with slow operation logging.');
+} finally {
+    assert.commandWorked(
+        secondaryDB.adminCommand({configureFailPoint: 'hangAfterCollectionInserts', mode: 'off'}));
+}
+
+rst.stopSet();
+})();
-- 
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