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/**
* Test that mongos times out when the config server replica set only contains nodes that
* are behind the majority opTime.
*/
// Checking UUID consistency involves mongos being able to do a read from the config server, but
// this test is designed to make mongos time out when reading from the config server.
TestData.skipCheckingUUIDsConsistentAcrossCluster = true;
(function() {
var st = new ShardingTest(
{shards: 1, configReplSetTestOptions: {settings: {chainingAllowed: false}}});
var testDB = st.s.getDB('test');
assert.commandWorked(testDB.adminCommand({enableSharding: 'test'}));
assert.commandWorked(testDB.adminCommand({shardCollection: 'test.user', key: {_id: 1}}));
// Ensures that all metadata writes thus far have been replicated to all nodes
st.configRS.awaitReplication();
var configSecondaryList = st.configRS.getSecondaries();
var configSecondaryToKill = configSecondaryList[0];
var delayedConfigSecondary = configSecondaryList[1];
delayedConfigSecondary.getDB('admin').adminCommand(
{configureFailPoint: 'rsSyncApplyStop', mode: 'alwaysOn'});
assert.writeOK(testDB.user.insert({_id: 1}));
// Do one metadata write in order to bump the optime on mongos
assert.writeOK(st.getDB('config').TestConfigColl.insert({TestKey: 'Test value'}));
st.configRS.stopMaster();
MongoRunner.stopMongod(configSecondaryToKill);
// Clears all cached info so mongos will be forced to query from the config.
st.s.adminCommand({flushRouterConfig: 1});
print('Attempting read on a sharded collection...');
var exception = assert.throws(function() {
testDB.user.find({}).maxTimeMS(15000).itcount();
});
assert(ErrorCodes.isExceededTimeLimitError(exception.code));
var msg = 'Command on database config timed out waiting for read concern to be satisfied.';
assert.soon(function() {
var logMessages =
assert.commandWorked(delayedConfigSecondary.adminCommand({getLog: 'global'})).log;
for (var i = 0; i < logMessages.length; i++) {
if (logMessages[i].indexOf(msg) != -1) {
return true;
}
}
return false;
}, 'Did not see any log entries containing the following message: ' + msg, 60000, 300);
// Can't do clean shutdown with this failpoint on.
delayedConfigSecondary.getDB('admin').adminCommand(
{configureFailPoint: 'rsSyncApplyStop', mode: 'off'});
st.stop();
}());
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