mongo/jstests/replsets/stepdown3.js

// Test that GLE asserts when the primary steps down while we're waiting for a replicated write.
//
// This test requires the fsync command to force a secondary to be stale.
// @tags: [requires_fsync]

var replTest = new ReplSetTest({ name: 'testSet', nodes: 2 });
var nodes = replTest.startSet();
replTest.initiate();
var master = replTest.getPrimary();

// do a write to allow stepping down of the primary;
// otherwise, the primary will refuse to step down
print("\ndo a write");
master.getDB("test").foo.insert({x:1});
replTest.awaitReplication();

// do another write, because the first one might be longer than 10 seconds ago
// on the secondary (due to starting up), and we need to be within 10 seconds
// to step down.
var options = { writeConcern: { w: 2, wtimeout: 30000 }};
assert.writeOK(master.getDB("test").foo.insert({ x: 2 }, options));
// lock secondary, to pause replication
print("\nlock secondary");
var locked = replTest.liveNodes.slaves[0];
printjson( locked.getDB("admin").runCommand({fsync : 1, lock : 1}) );

// do a write
print("\ndo a write");
master.getDB("test").foo.insert({x:3});

// step down the primary asyncronously
print("stepdown");
var command = "sleep(4000); tojson(db.adminCommand( { replSetStepDown : 60, force : 1 } ));"
var awaitShell = startParallelShell(command, master.port);

print("getlasterror; should assert or return an error, depending on timing");
var gleFunction = function() {
    var result = master.getDB("test").runCommand({getLastError : 1, w: 2 , wtimeout :30000 });
    if (result.errmsg === "not master" ||
            result.code == 10107 ||
            result.code == 11601 /*interrupted*/ ) {
        throw new Error("satisfy assert.throws()");
    }
    print("failed to throw exception; GLE returned: ");
    printjson(result);
};
var result = assert.throws(gleFunction);
print("result of gle:");
printjson(result);

var exitCode = awaitShell({checkExitSuccess: false});
assert.neq(0, exitCode, "expected replSetStepDown to close the shell's connection");

// unlock and shut down
printjson(locked.getDB("admin").fsyncUnlock());
replTest.stopSet();