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/**
* Tests session invalidation and checking out a session without refresh on a new secondary.
*
* Tests this by:
* 1. Starting with a primary that is running a transaction. We will hang the primary before it
* checks out the session for the transaction.
* 2. Step up another node and prepare a transaction on the same session used for the transaction on
* the old primary. This should cause the old primary to step down, invalidating the relevant
* session.
* 3. When the old primary replicates the prepared transaction, wait so that the update to the
* config.transactions table for the prepared transaction happens before the node prepares the
* transaction. Even though the session is still invalidated, applying the prepare should check
* out the session without refreshing from disk.
*
* See SERVER-50486 for more details.
*
* @tags: [uses_transactions, uses_prepare_transaction]
*/
(function() {
"use strict";
load("jstests/core/txns/libs/prepare_helpers.js");
load("jstests/libs/parallel_shell_helpers.js");
load("jstests/libs/fail_point_util.js");
const replTest = new ReplSetTest({nodes: 2});
replTest.startSet();
replTest.initiate();
const dbName = "test";
const collName = "coll";
const primary = replTest.getPrimary();
const newPrimary = replTest.getSecondary();
const testDB = primary.getDB(dbName);
testDB.dropDatabase();
assert.commandWorked(testDB.runCommand({create: collName, writeConcern: {w: "majority"}}));
const session = primary.startSession({causalConsistency: false});
const sessionID = session.getSessionId();
let failPoint = configureFailPoint(primary, "hangBeforeSessionCheckOut");
const txnFunc = function(sessionID) {
load("jstests/core/txns/libs/prepare_helpers.js");
const session = PrepareHelpers.createSessionWithGivenId(db.getMongo(), sessionID);
const sessionDB = session.getDatabase("test");
session.startTransaction({writeConcern: {w: "majority"}});
assert.commandFailedWithCode(
sessionDB.runCommand({find: "test", readConcern: {level: "snapshot"}}),
ErrorCodes.InterruptedDueToReplStateChange);
};
const waitForTxnShell = startParallelShell(funWithArgs(txnFunc, sessionID), primary.port);
failPoint.wait();
replTest.stepUp(newPrimary);
assert.eq(replTest.getPrimary(), newPrimary, "Primary didn't change.");
const prepareTxnFunc = function(sessionID) {
load("jstests/core/txns/libs/prepare_helpers.js");
const newPrimaryDB = db.getMongo().getDB("test");
// Start a transaction on the same session as before, but with a higher transaction number.
assert.commandWorked(newPrimaryDB.runCommand({
insert: "coll",
documents: [{c: 1}],
lsid: sessionID,
txnNumber: NumberLong(10),
startTransaction: true,
autocommit: false
}));
assert.commandWorked(newPrimaryDB.adminCommand({
prepareTransaction: 1,
lsid: sessionID,
txnNumber: NumberLong(10),
autocommit: false,
writeConcern: {w: "majority"}
}));
};
let applyFailPoint = configureFailPoint(primary, "hangBeforeSessionCheckOutForApplyPrepare");
const waitForPrepareTxnShell =
startParallelShell(funWithArgs(prepareTxnFunc, sessionID), newPrimary.port);
applyFailPoint.wait();
// Wait so that the update to the config.transactions table from the newly prepared transaction
// happens before the user transaction checks out the session. Otherwise, we won't see the
// transaction state as being "Prepared" when refreshing the session from storage.
sleep(10000);
failPoint.off();
// Wait so that the user transaction checks out the session before the thread applying the
// prepareTransaction is unpaused. Otherwise, applying the prepareTransaction will make the session
// valid.
sleep(10000);
applyFailPoint.off();
waitForPrepareTxnShell();
waitForTxnShell();
let newPrimaryDB = replTest.getPrimary().getDB("test");
const commitTimestamp =
assert.commandWorked(newPrimaryDB.runCommand({insert: collName, documents: [{}]})).opTime.ts;
assert.commandWorked(newPrimaryDB.adminCommand({
commitTransaction: 1,
commitTimestamp: commitTimestamp,
lsid: sessionID,
txnNumber: NumberLong(10),
autocommit: false
}));
replTest.stopSet();
})();
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