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// Ensure stepDown operations that are waiting for replication can be interrupted with killOp()
// 1. Start up a 3 node set (1 arbiter).
// 2. Stop replication on the SECONDARY using a fail point.
// 3. Do one write and then spin up a second shell which asks the PRIMARY to StepDown.
// 4. Once StepDown has begun, attempt to do writes and confirm that they fail with
// NotWritablePrimary.
// 5. Kill the stepDown operation.
// 6. Writes should become allowed again and the primary should stay primary.
(function() {
"use strict";
load("jstests/libs/write_concern_util.js");
var name = "interruptStepDown";
var replSet = new ReplSetTest({name: name, nodes: 3});
var nodes = replSet.nodeList();
replSet.startSet();
replSet.initiate({
"_id": name,
"members": [
{"_id": 0, "host": nodes[0]},
{"_id": 1, "host": nodes[1], "priority": 0},
{"_id": 2, "host": nodes[2], "arbiterOnly": true}
]
});
replSet.waitForState(replSet.nodes[0], ReplSetTest.State.PRIMARY);
var secondary = replSet.getSecondary();
jsTestLog('Disable replication on the SECONDARY ' + secondary.host);
stopServerReplication(secondary);
var primary = replSet.getPrimary();
assert.eq(primary.host, nodes[0], "primary assumed to be node 0");
// do a write then ask the PRIMARY to stepdown
jsTestLog("Initiating stepdown");
assert.commandWorked(primary.getDB(name).foo.insert(
{myDoc: true, x: 1}, {writeConcern: {w: 1, wtimeout: ReplSetTest.kDefaultTimeoutMS}}));
var stepDownCmd = function() {
var res =
db.getSiblingDB('admin').runCommand({replSetStepDown: 60, secondaryCatchUpPeriodSecs: 60});
assert.commandFailedWithCode(res, 11601 /*interrupted*/);
};
var stepDowner = startParallelShell(stepDownCmd, primary.port);
var stepDownOpID = -1;
jsTestLog("Looking for stepdown in currentOp() output");
assert.soon(function() {
var res = primary.getDB('admin').currentOp(true);
for (var index in res.inprog) {
var entry = res.inprog[index];
if (entry["command"] && entry["command"]["replSetStepDown"] === 60) {
stepDownOpID = entry.opid;
return true;
}
}
printjson(res);
return false;
}, "No pending stepdown command found");
jsTestLog("Ensure that writes start failing with NotWritablePrimary errors");
assert.soonNoExcept(function() {
assert.commandFailedWithCode(primary.getDB(name).foo.insert({x: 2}),
ErrorCodes.NotWritablePrimary);
return true;
});
jsTestLog("Ensure that even though writes are failing with NotWritablePrimary, we still report " +
"ourselves as PRIMARY");
assert.eq(ReplSetTest.State.PRIMARY, primary.adminCommand('replSetGetStatus').myState);
// kill the stepDown and ensure that that unblocks writes to the db
jsTestLog("Killing stepdown");
primary.getDB('admin').killOp(stepDownOpID);
var exitCode = stepDowner();
assert.eq(0, exitCode);
assert.commandWorked(primary.getDB(name).foo.remove({}));
restartServerReplication(secondary);
replSet.stopSet();
})();
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