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/**
* Tests that a retryable write started on one primary can be continued on a different node after
* failover.
*/
(function() {
"use strict";
load("jstests/libs/retryable_writes_util.js");
if (!RetryableWritesUtil.storageEngineSupportsRetryableWrites(jsTest.options().storageEngine)) {
jsTestLog("Retryable writes are not supported, skipping test");
return;
}
function stepDownPrimary(replTest) {
assert.commandWorked(replTest.getPrimary().adminCommand({replSetStepDown: 10, force: true}));
}
const replTest = new ReplSetTest({nodes: 3});
replTest.startSet();
replTest.initiate();
////////////////////////////////////////////////////////////////////////
// Test insert command
let insertCmd = {
insert: "foo",
documents: [{_id: 10}, {_id: 30}],
ordered: false,
lsid: {id: UUID()},
txnNumber: NumberLong(5)
};
// Run the command on the primary and wait for replication.
let primary = replTest.getPrimary();
let testDB = primary.getDB("test");
let result = assert.commandWorked(testDB.runCommand(insertCmd));
assert.eq(2, testDB.foo.find().itcount());
replTest.awaitReplication();
// Step down the primary and wait for a new one.
stepDownPrimary(replTest);
let newPrimary = replTest.getPrimary();
testDB = newPrimary.getDB("test");
let oplog = newPrimary.getDB("local").oplog.rs;
let insertOplogEntries = oplog.find({ns: "test.foo", op: "i"}).itcount();
// Retry the command on the secondary and verify it wasn't repeated.
let retryResult = assert.commandWorked(testDB.runCommand(insertCmd));
assert.eq(result.ok, retryResult.ok);
assert.eq(result.n, retryResult.n);
assert.eq(result.writeErrors, retryResult.writeErrors);
assert.eq(result.writeConcernErrors, retryResult.writeConcernErrors);
assert.eq(2, testDB.foo.find().itcount());
assert.eq(insertOplogEntries, oplog.find({ns: "test.foo", op: "i"}).itcount());
////////////////////////////////////////////////////////////////////////
// Test update command
let updateCmd = {
update: "foo",
updates: [
{q: {_id: 10}, u: {$inc: {x: 1}}}, // in place
{q: {_id: 20}, u: {$inc: {y: 1}}, upsert: true},
{q: {_id: 30}, u: {z: 1}} // replacement
],
ordered: false,
lsid: {id: UUID()},
txnNumber: NumberLong(10),
};
primary = replTest.getPrimary();
testDB = primary.getDB("test");
// Run the command on the primary and wait for replication.
result = assert.commandWorked(testDB.runCommand(updateCmd));
assert.eq(3, testDB.foo.find().itcount());
replTest.awaitReplication();
// Step down the primary and wait for a new one.
stepDownPrimary(replTest);
newPrimary = replTest.getPrimary();
testDB = newPrimary.getDB("test");
oplog = newPrimary.getDB("local").oplog.rs;
let updateOplogEntries = oplog.find({ns: "test.foo", op: "u"}).itcount();
// Upserts are stored as inserts if they match no existing documents.
insertOplogEntries = oplog.find({ns: "test.foo", op: "i"}).itcount();
// Retry the command on the secondary and verify it wasn't repeated.
retryResult = assert.commandWorked(testDB.runCommand(updateCmd));
assert.eq(result.ok, retryResult.ok);
assert.eq(result.n, retryResult.n);
assert.eq(result.nModified, retryResult.nModified);
assert.eq(result.upserted, retryResult.upserted);
assert.eq(result.writeErrors, retryResult.writeErrors);
assert.eq(result.writeConcernErrors, retryResult.writeConcernErrors);
assert.eq(3, testDB.foo.find().itcount());
assert.eq({_id: 10, x: 1}, testDB.foo.findOne({_id: 10}));
assert.eq({_id: 20, y: 1}, testDB.foo.findOne({_id: 20}));
assert.eq({_id: 30, z: 1}, testDB.foo.findOne({_id: 30}));
assert.eq(updateOplogEntries, oplog.find({ns: "test.foo", op: "u"}).itcount());
assert.eq(insertOplogEntries, oplog.find({ns: "test.foo", op: "i"}).itcount());
////////////////////////////////////////////////////////////////////////
// Test delete command
let deleteCmd = {
delete: "foo",
deletes: [{q: {x: 1}, limit: 1}, {q: {y: 1}, limit: 1}],
ordered: false,
lsid: {id: UUID()},
txnNumber: NumberLong(15),
};
primary = replTest.getPrimary();
testDB = primary.getDB("test");
assert.writeOK(testDB.foo.insert({_id: 40, x: 1}));
assert.writeOK(testDB.foo.insert({_id: 50, y: 1}));
// Run the command on the primary and wait for replication.
result = assert.commandWorked(testDB.runCommand(deleteCmd));
assert.eq(1, testDB.foo.find({x: 1}).itcount());
assert.eq(1, testDB.foo.find({y: 1}).itcount());
replTest.awaitReplication();
// Step down the primary and wait for a new one.
stepDownPrimary(replTest);
newPrimary = replTest.getPrimary();
testDB = newPrimary.getDB("test");
oplog = newPrimary.getDB("local").oplog.rs;
let deleteOplogEntries = oplog.find({ns: "test.foo", op: "d"}).itcount();
// Retry the command on the secondary and verify it wasn't repeated.
retryResult = assert.commandWorked(testDB.runCommand(deleteCmd));
assert.eq(result.ok, retryResult.ok);
assert.eq(result.n, retryResult.n);
assert.eq(result.writeErrors, retryResult.writeErrors);
assert.eq(result.writeConcernErrors, retryResult.writeConcernErrors);
assert.eq(1, testDB.foo.find({x: 1}).itcount());
assert.eq(1, testDB.foo.find({y: 1}).itcount());
assert.eq(deleteOplogEntries, oplog.find({ns: "test.foo", op: "d"}).itcount());
replTest.stopSet();
})();
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