1 files changed, 113 insertions, 0 deletions
diff --git a/jstests/noPassthrough/indexbg_restart_secondary.js b/jstests/noPassthrough/indexbg_restart_secondary.js
new file mode 100644
index 00000000000..b4ccec94798
--- /dev/null
+++ b/jstests/noPassthrough/indexbg_restart_secondary.js
@@ -0,0 +1,113 @@
+/**
+ * Starts a replica set with arbiter, builds an index in background.
+ * Kills the secondary once the index build starts with a failpoint.
+ * The index build should resume when the secondary is restarted.
+ *
+ * @tags: [
+ *   requires_persistence,
+ *   requires_journaling,
+ *   requires_replication,
+ * ]
+ */
+
+(function() {
+'use strict';
+
+load('jstests/noPassthrough/libs/index_build.js');
+
+// Set up replica set
+const replTest = new ReplSetTest({
+    nodes: [
+        {},
+        {
+            // Disallow elections on secondary.
+            rsConfig: {
+                priority: 0,
+                votes: 0,
+            },
+            slowms: 30000,  // Don't log slow operations on secondary. See SERVER-44821.
+        },
+    ]
+});
+
+// We need an arbiter to ensure that the primary doesn't step down
+// when we restart the secondary.
+const nodes = replTest.startSet();
+replTest.initiate();
+
+var primary = replTest.getPrimary();
+var second = replTest.getSecondary();
+
+var primaryDB = primary.getDB('bgIndexSec');
+var secondDB = second.getDB('bgIndexSec');
+
+var collectionName = 'jstests_bgsec';
+
+var coll = primaryDB.getCollection(collectionName);
+
+var size = 100;
+
+var bulk = primaryDB.jstests_bgsec.initializeUnorderedBulkOp();
+for (var i = 0; i < size; ++i) {
+    bulk.insert({i: i});
+}
+assert.commandWorked(bulk.execute({j: true}));
+assert.eq(size, coll.count(), 'unexpected number of documents after bulk insert.');
+
+// Make sure the documents make it to the secondary.
+replTest.awaitReplication();
+
+if (IndexBuildTest.supportsTwoPhaseIndexBuild(primary)) {
+    // Pause the index build on the primary after replicating the startIndexBuild oplog entry.
+    IndexBuildTest.pauseIndexBuilds(primaryDB);
+    IndexBuildTest.startIndexBuild(primary, coll.getFullName(), {i: 1});
+
+    // Wait for build to start on the secondary.
+    jsTestLog("waiting for index build to start on secondary");
+    IndexBuildTest.waitForIndexBuildToStart(secondDB);
+} else {
+    assert.commandWorked(secondDB.adminCommand(
+        {configureFailPoint: 'leaveIndexBuildUnfinishedForShutdown', mode: 'alwaysOn'}));
+
+    try {
+        coll.createIndex({i: 1}, {background: true});
+        primaryDB.getLastError(2);
+        assert.eq(2, coll.getIndexes().length);
+
+        // Make sure all writes are durable on the secondary so that we can restart it knowing that
+        // the index build will be found on startup.
+        // Waiting for durable is important for both (A) the record that we started the index build
+        // so it is rebuild on restart, and (B) the update to minvalid to show that we've already
+        // applied the oplog entry so it isn't replayed. If (A) is present without (B), then there
+        // are two ways that the index can be rebuilt on startup and this test is only for the one
+        // triggered by (A).
+        secondDB.adminCommand({fsync: 1});
+    } finally {
+        assert.commandWorked(secondDB.adminCommand(
+            {configureFailPoint: 'leaveIndexBuildUnfinishedForShutdown', mode: 'off'}));
+    }
+}
+
+MongoRunner.stopMongod(second);
+replTest.start(second, {}, /*restart=*/true, /*wait=*/true);
+
+// Make sure secondary comes back.
+try {
+    assert.soon(function() {
+        try {
+            secondDB.isMaster();  // trigger a reconnect if needed
+            return true;
+        } catch (e) {
+            return false;
+        }
+    }, "secondary didn't restart", 30000, 1000);
+} finally {
+    // Let index build complete on primary, which replicates a commitIndexBuild to the secondary.
+    IndexBuildTest.resumeIndexBuilds(primaryDB);
+}
+
+assert.soon(function() {
+    return 2 == secondDB.getCollection(collectionName).getIndexes().length;
+}, "Index build not resumed after restart", 30000, 50);
+replTest.stopSet();
+}());