SERVER-34977 SERVER-35435 SERVER-34976 Fix fastcounts for RTT, including capped collections.

1 files changed, 64 insertions, 0 deletions

diff --git a/jstests/replsets/rollback_transactions_count.js b/jstests/replsets/rollback_transactions_count.js
new file mode 100644
index 00000000000..0dca2f2baba
--- /dev/null
+++ b/jstests/replsets/rollback_transactions_count.js
@@ -0,0 +1,64 @@
+/**
+ * Tests that rollback fixes the transactions table and gets the correct fastcounts for
+ * transactions.
+ */
+(function() {
+    "use strict";
+
+    load("jstests/replsets/libs/rollback_test.js");
+
+    const testName = "rollback_transactions_count";
+    const dbName = testName;
+    const collName = "txnCollName";
+
+    const rollbackTest = new RollbackTest(testName);
+    const primary = rollbackTest.getPrimary();
+
+    const session1 = primary.startSession();
+    const sessionDb1 = session1.getDatabase(dbName);
+    const sessionColl1 = sessionDb1[collName];
+    assert.commandWorked(sessionColl1.insert({a: 1}));
+    session1.startTransaction();
+    assert.commandWorked(sessionColl1.insert({b: 1}));
+    session1.commitTransaction();
+
+    rollbackTest.getTestFixture().awaitLastOpCommitted();
+    assert.commandWorked(
+        primary.adminCommand({configureFailPoint: 'disableSnapshotting', mode: 'alwaysOn'}));
+
+    const session2 = primary.startSession();
+    const sessionDb2 = session2.getDatabase(dbName);
+    const sessionColl2 = sessionDb2[collName];
+    session2.startTransaction();
+    assert.commandWorked(sessionColl2.insert({c: 1}));
+    session2.commitTransaction();
+
+    rollbackTest.transitionToRollbackOperations();
+
+    session2.startTransaction();
+    assert.commandWorked(sessionColl2.insert({d: 1}));
+    session2.commitTransaction();
+
+    const session3 = primary.startSession();
+    const sessionDb3 = session3.getDatabase(dbName);
+    const sessionColl3 = sessionDb3[collName];
+    session3.startTransaction();
+    assert.commandWorked(sessionColl3.insert({e: 1}));
+    session3.commitTransaction();
+
+    assert.eq(sessionColl1.find().itcount(), 5);
+
+    rollbackTest.transitionToSyncSourceOperationsBeforeRollback();
+    rollbackTest.transitionToSyncSourceOperationsDuringRollback();
+    try {
+        rollbackTest.transitionToSteadyStateOperations();
+    } finally {
+        assert.commandWorked(
+            primary.adminCommand({configureFailPoint: 'disableSnapshotting', mode: 'off'}));
+    }
+
+    assert.eq(sessionColl1.find().itcount(), 3);
+    assert.eq(primary.getDB('config')['transactions'].find().itcount(), 2);
+
+    rollbackTest.stop();
+})();