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path: root/jstests/multiVersion/initialize_from_old_node.js
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/*
 * This is a regression test for SERVER-16189, to make sure a replica set with both current and
 * prior version nodes can be initialized from the prior version node.
 */

(function() {
"use strict";
var name = "initialize_from_old";
var oldVersion = 'last-stable';
var newVersion = 'latest';
var nodes = {
    n0: {binVersion: oldVersion},
    n1: {binVersion: newVersion},
    n2: {binVersion: newVersion}
};
var rst = new ReplSetTest({nodes: nodes, name: name});
var conns = rst.startSet();
var oldNode = conns[0];
var config = rst.getReplSetConfig();
var response = oldNode.getDB("admin").runCommand({replSetInitiate: config});
assert.commandWorked(response);
// Wait for secondaries to finish their initial sync before shutting down the cluster.
rst.awaitSecondaryNodes();
rst.stopSet();
})();