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load("jstests/replsets/rslib.js");
/**
* Test for making sure that the replica seed list in the config server does not
* become invalid when a replica set reconfig happens.
*/
(function() {
"use strict";
// Skip db hash check since the removed node has wrong config and is still alive.
TestData.skipCheckDBHashes = true;
var NODE_COUNT = 3;
var st = new ShardingTest({shards: {rs0: {nodes: NODE_COUNT, oplogSize: 10}}});
var replTest = st.rs0;
var mongos = st.s;
var shardDoc = mongos.getDB('config').shards.findOne();
assert.eq(NODE_COUNT, shardDoc.host.split(',').length); // seed list should contain all nodes
/* Make sure that the first node is not the primary (by making the second one primary).
* We need to do this since the ReplicaSetMonitor iterates over the nodes one
* by one and you can't remove a node that is currently the primary.
*/
var connPoolStats = mongos.getDB('admin').runCommand({connPoolStats: 1});
var targetHostName = connPoolStats['replicaSets'][replTest.name].hosts[1].addr;
var priConn = replTest.getPrimary();
var confDoc = priConn.getDB("local").system.replset.findOne();
for (var idx = 0; idx < confDoc.members.length; idx++) {
if (confDoc.members[idx].host == targetHostName) {
confDoc.members[idx].priority = 100;
} else {
confDoc.members[idx].priority = 1;
}
}
confDoc.version++;
jsTest.log('Changing conf to ' + tojson(confDoc));
reconfig(replTest, confDoc);
awaitRSClientHosts(mongos, {host: targetHostName}, {ok: true, ismaster: true});
// Remove first node from set
confDoc.members.shift();
confDoc.version++;
reconfig(replTest, confDoc);
jsTest.log("Waiting for mongos to reflect change in shard replica set membership.");
var replView;
assert.soon(
function() {
var connPoolStats = mongos.getDB('admin').runCommand('connPoolStats');
replView = connPoolStats.replicaSets[replTest.name].hosts;
return replView.length == confDoc.members.length;
},
function() {
return ("Expected to find " + confDoc.members.length + " nodes but found " +
replView.length + " in " + tojson(replView));
});
jsTest.log("Waiting for config.shards to reflect change in shard replica set membership.");
assert.soon(
function() {
shardDoc = mongos.getDB('config').shards.findOne();
// seed list should contain one less node
return shardDoc.host.split(',').length == confDoc.members.length;
},
function() {
return ("Expected to find " + confDoc.members.length + " nodes but found " +
shardDoc.host.split(',').length + " in " + shardDoc.host);
});
st.stop();
}());
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