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// Priority (1 member with non-default priority).
// 3-node replica set - one arbiter and two electable nodes with different priorities.
// Wait for replica set to stabilize with higher priority node as primary.
// Step down high priority node. Wait for the lower priority electable node to become primary.
// Eventually high priority node will run a priority takeover election to become primary.
(function() {
'use strict';
load('jstests/replsets/rslib.js');
var name = 'priority_takeover_one_node_higher_priority';
var replSet = new ReplSetTest({
name: name,
nodes: [
{rsConfig: {priority: 3}},
{},
{rsConfig: {arbiterOnly: true}},
]
});
replSet.startSet();
replSet.initiate();
replSet.waitForState(replSet.nodes[0], ReplSetTest.State.PRIMARY);
var primary = replSet.getPrimary();
replSet.awaitSecondaryNodes();
replSet.awaitReplication();
// Primary should step down long enough for election to occur on secondary.
var config = assert.commandWorked(primary.adminCommand({replSetGetConfig: 1})).config;
var electionTimeoutMillis = config.settings.electionTimeoutMillis;
var stepDownGuardMillis = electionTimeoutMillis * 2;
var stepDownException = assert.throws(function() {
var result = primary.adminCommand({replSetStepDown: stepDownGuardMillis / 1000});
print('replSetStepDown did not throw exception but returned: ' + tojson(result));
});
assert.neq(-1,
tojson(stepDownException).indexOf('error doing query'),
'replSetStepDown did not disconnect client');
// Step down primary and wait for node 1 to be promoted to primary.
replSet.waitForState(replSet.nodes[1], ReplSetTest.State.PRIMARY, 60 * 1000);
// Eventually node 0 will stand for election again because it has a higher priorty.
replSet.waitForState(
replSet.nodes[0], ReplSetTest.State.PRIMARY, stepDownGuardMillis + 60 * 1000);
})();
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