101 lines
3.9 KiB
JavaScript
101 lines
3.9 KiB
JavaScript
/*
|
|
* Tests that heartbeats containing writes from a different branch of history can't cause a stale
|
|
* primary to incorrectly acknowledge a w:majority write that's about to be rolled back.
|
|
*/
|
|
(function() {
|
|
'use strict';
|
|
|
|
load("jstests/replsets/rslib.js");
|
|
load("jstests/libs/write_concern_util.js");
|
|
|
|
var name = "writeConcernStepDownAndBackUp";
|
|
var dbName = "wMajorityCheck";
|
|
var collName = "stepdownAndBackUp";
|
|
|
|
var rst = new ReplSetTest({
|
|
name: name,
|
|
nodes: [
|
|
{},
|
|
{},
|
|
{rsConfig: {priority: 0}},
|
|
],
|
|
useBridge: true
|
|
});
|
|
var nodes = rst.startSet();
|
|
rst.initiate();
|
|
|
|
function waitForPrimary(node) {
|
|
assert.soon(function() {
|
|
return node.adminCommand('ismaster').ismaster;
|
|
});
|
|
}
|
|
|
|
// SERVER-20844 ReplSetTest starts up a single node replica set then reconfigures to the correct
|
|
// size for faster startup, so nodes[0] is always the first primary.
|
|
jsTestLog("Make sure node 0 is primary.");
|
|
var primary = rst.getPrimary();
|
|
var secondaries = rst.getSecondaries();
|
|
assert.eq(nodes[0], primary);
|
|
// Wait for all data bearing nodes to get up to date.
|
|
assert.writeOK(nodes[0].getDB(dbName).getCollection(collName).insert(
|
|
{a: 1}, {writeConcern: {w: 3, wtimeout: rst.kDefaultTimeoutMS}}));
|
|
|
|
// Stop the secondaries from replicating.
|
|
stopServerReplication(secondaries);
|
|
// Stop the primary from being able to complete stepping down.
|
|
assert.commandWorked(
|
|
nodes[0].adminCommand({configureFailPoint: 'blockHeartbeatStepdown', mode: 'alwaysOn'}));
|
|
|
|
jsTestLog("Do w:majority write that will block waiting for replication.");
|
|
var doMajorityWrite = function() {
|
|
var res = db.getSiblingDB('wMajorityCheck').stepdownAndBackUp.insert({a: 2}, {
|
|
writeConcern: {w: 'majority'}
|
|
});
|
|
assert.writeErrorWithCode(res, ErrorCodes.PrimarySteppedDown);
|
|
};
|
|
|
|
var joinMajorityWriter = startParallelShell(doMajorityWrite, nodes[0].port);
|
|
|
|
jsTest.log("Disconnect primary from all secondaries");
|
|
nodes[0].disconnect(nodes[1]);
|
|
nodes[0].disconnect(nodes[2]);
|
|
|
|
jsTest.log("Wait for a new primary to be elected");
|
|
// Allow the secondaries to replicate again.
|
|
restartServerReplication(secondaries);
|
|
|
|
waitForPrimary(nodes[1]);
|
|
|
|
jsTest.log("Do a write to the new primary");
|
|
assert.writeOK(nodes[1].getDB(dbName).getCollection(collName).insert(
|
|
{a: 3}, {writeConcern: {w: 2, wtimeout: rst.kDefaultTimeoutMS}}));
|
|
|
|
jsTest.log("Reconnect the old primary to the rest of the nodes");
|
|
// Only allow the old primary to connect to the other nodes, not the other way around.
|
|
// This is so that the old priamry will detect that it needs to step down and step itself down,
|
|
// rather than one of the other nodes detecting this and sending it a replSetStepDown command,
|
|
// which would cause the old primary to kill all operations and close all connections, making
|
|
// the way that the insert in the parallel shell fails be nondeterministic. Rather than
|
|
// handling all possible failure modes in the parallel shell, allowing heartbeat connectivity in
|
|
// only one direction makes it easier for the test to fail deterministically.
|
|
nodes[1].acceptConnectionsFrom(nodes[0]);
|
|
nodes[2].acceptConnectionsFrom(nodes[0]);
|
|
|
|
joinMajorityWriter();
|
|
|
|
// Allow the old primary to finish stepping down so that shutdown can finish.
|
|
var res = null;
|
|
try {
|
|
res = nodes[0].adminCommand({configureFailPoint: 'blockHeartbeatStepdown', mode: 'off'});
|
|
} catch (e) {
|
|
// Expected - once we disable the fail point the stepdown will proceed and it's racy whether
|
|
// the stepdown closes all connections before or after the configureFailPoint command
|
|
// returns
|
|
}
|
|
if (res) {
|
|
assert.commandWorked(res);
|
|
}
|
|
|
|
rst.stopSet();
|
|
}());
|