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/**
* Test that startup recovery successfully applies all operations from a transaction after
* replaying the commitTransaction oplog entry. We hold back the snapshot so that we make sure that
* the operations from the transaction are not reflected in the data when recovery starts.
*
* @tags: [uses_transactions, uses_prepare_transaction]
*/
(function() {
"use strict";
load("jstests/core/txns/libs/prepare_helpers.js");
const replTest = new ReplSetTest({nodes: 1});
replTest.startSet();
replTest.initiate();
let primary = replTest.getPrimary();
const dbName = "test";
const collName = "commit_transaction_recovery";
let testDB = primary.getDB(dbName);
const testColl = testDB.getCollection(collName);
testDB.runCommand({drop: collName});
assert.commandWorked(testDB.runCommand({create: collName}));
let session = primary.startSession({causalConsistency: false});
let sessionDB = session.getDatabase(dbName);
const sessionColl = sessionDB.getCollection(collName);
jsTestLog("Disable snapshotting on all nodes");
// Disable snapshotting so that future operations do not enter the majority snapshot.
assert.commandWorked(
primary.adminCommand({configureFailPoint: "disableSnapshotting", mode: "alwaysOn"}));
session.startTransaction();
assert.commandWorked(sessionColl.insert({_id: 1}));
let prepareTimestamp = PrepareHelpers.prepareTransaction(session);
jsTestLog("Committing the transaction");
// Since the commitTimestamp is after the last snapshot, this oplog entry will be replayed
// during replication recovery during restart.
assert.commandWorked(PrepareHelpers.commitTransaction(session, prepareTimestamp));
jsTestLog("Restarting node");
// Perform a clean shutdown and restart. Note that the 'disableSnapshotting' failpoint will be
// unset on the node following the restart.
replTest.stop(primary, undefined, {skipValidation: true});
replTest.start(primary, {}, true);
jsTestLog("Node was restarted");
primary = replTest.getPrimary();
testDB = primary.getDB(dbName);
session = primary.startSession({causalConsistency: false});
sessionDB = session.getDatabase(dbName);
session.startTransaction();
// Make sure that we can read the document from the transaction after recovery.
assert.eq(testDB[collName].findOne({_id: 1}), {_id: 1});
// Make sure that another write on the same document from the transaction has no write conflict.
// Also, make sure that we can run another transaction after recovery without any problems.
assert.commandWorked(sessionDB[collName].update({_id: 1}, {_id: 1, a: 1}));
prepareTimestamp = PrepareHelpers.prepareTransaction(session);
assert.commandWorked(PrepareHelpers.commitTransaction(session, prepareTimestamp));
assert.eq(testDB[collName].findOne({_id: 1}), {_id: 1, a: 1});
replTest.stopSet();
}());
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