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/**
* Tests that a txnNumber for a transaction that was aborted in-memory can be reused by a new
* primary. Mongos does this as an optimization.
* @tags: [uses_transactions, uses_prepare_transaction]
*/
(function() {
"use strict";
const rst = new ReplSetTest({name: "invalidate_sessions_on_stepdown", nodes: 2});
rst.startSet();
rst.initiateWithHighElectionTimeout();
const dbName = "test";
const collName = "coll";
const node0 = rst.getPrimary();
const node1 = rst.getSecondary();
const node0Session = node0.startSession();
const sessionId = node0Session.getSessionId();
const node0SessionDB = node0Session.getDatabase(dbName);
assert.commandWorked(node0SessionDB.coll.insert({a: 1}, {writeConcern: {"w": "majority"}}));
jsTestLog("Run a transaction with txnNumber 0 on the primary.");
assert.commandWorked(node0SessionDB.runCommand({
insert: collName,
documents: [{b: 1}],
txnNumber: NumberLong(0),
startTransaction: true,
autocommit: false
}));
jsTestLog("Step up the secondary. The primary will abort the transaction when it steps down.");
assert.commandWorked(node1.adminCommand({replSetStepUp: 1}));
assert.eq(node1, rst.getPrimary());
const node1DB = node1.getDB(dbName);
jsTestLog("Run a transaction with txnNumber 0 and the same session ID on the new primary.");
assert.commandWorked(node1DB.runCommand({
insert: collName,
documents: [{c: 1}],
lsid: sessionId,
txnNumber: NumberLong(0),
startTransaction: true,
autocommit: false
}));
let res = assert.commandWorked(node1DB.adminCommand({
prepareTransaction: 1,
lsid: sessionId,
txnNumber: NumberLong(0),
autocommit: false,
writeConcern: {w: "majority"}
}));
assert.commandWorked(node1DB.adminCommand({
commitTransaction: 1,
commitTimestamp: res.prepareTimestamp,
lsid: sessionId,
txnNumber: NumberLong(0),
autocommit: false,
writeConcern: {w: "majority"}
}));
assert.eq(2, node0SessionDB.coll.find().itcount());
assert.eq(0, node0SessionDB.coll.find({b: 1}).itcount());
assert.eq(1, node0SessionDB.coll.find({c: 1}).itcount());
rst.stopSet();
})();
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