SERVER-39903 notablescan parameter should be ignored for internally used

namespaces

1 files changed, 73 insertions, 0 deletions

diff --git a/jstests/noPassthrough/ignore_notablescan.js b/jstests/noPassthrough/ignore_notablescan.js
new file mode 100644
index 00000000000..484d5bf5010
--- /dev/null
+++ b/jstests/noPassthrough/ignore_notablescan.js
@@ -0,0 +1,73 @@
+// Test that 'notablescan' parameter does not affect queries internal namespaces.
+// @tags: [uses_transactions]
+(function() {
+    "use strict";
+
+    const dbName = "test";
+    const collName = "coll";
+
+    function runTests(ServerType) {
+        const s = new ServerType();
+
+        const configDB = s.getConn().getDB("config");
+        const session = s.getConn().getDB(dbName).getMongo().startSession();
+        const primaryDB = session.getDatabase(dbName);
+
+        // Implicitly create the collection outside of the transaction.
+        assert.writeOK(primaryDB.getCollection(collName).insert({x: 1}));
+
+        // Run a transaction so the 'config.transactions' collection is implicitly created.
+        session.startTransaction();
+        assert.writeOK(primaryDB.getCollection(collName).insert({x: 2}));
+        session.commitTransaction();
+
+        // Run a predicate query that would fail if we did not ignore the 'notablescan' flag.
+        assert.eq(configDB.transactions.find({any_nonexistent_field: {$exists: true}}).itcount(),
+                  0);
+
+        // Run the same query against the user created collection honoring the 'notablescan' flag.
+        // This will cause the query to fail as there is no viable query plan. Unfortunately,
+        // the reported query error code is the cryptic 'BadValue'.
+        assert.commandFailedWithCode(
+            primaryDB.runCommand(
+                {find: collName, filter: {any_nonexistent_field: {$exists: true}}}),
+            ErrorCodes.BadValue);
+
+        s.stop();
+    }
+
+    function Sharding() {
+        this.st = new ShardingTest({
+            shards: 2,
+            config: 1,
+            other: {
+                shardOptions: {setParameter: {notablescan: true}},
+                configOptions: {setParameter: {notablescan: true}}
+            }
+        });
+    }
+
+    Sharding.prototype.stop = function() {
+        this.st.stop();
+    };
+
+    Sharding.prototype.getConn = function() {
+        return this.st.s0;
+    };
+
+    function ReplSet() {
+        this.rst = new ReplSetTest({nodes: 1, nodeOptions: {setParameter: {notablescan: true}}});
+        this.rst.startSet();
+        this.rst.initiate();
+    }
+
+    ReplSet.prototype.stop = function() {
+        this.rst.stopSet();
+    };
+
+    ReplSet.prototype.getConn = function() {
+        return this.rst.getPrimary();
+    };
+
+    [ReplSet, Sharding].forEach(runTests);
+}());