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// Tests operation of the cluster when the config servers have no primary and thus the cluster
// metadata is in read-only mode.
(function() {
"use strict";
var st = new ShardingTest({
shards: 1,
other: {
c0: {}, // Make sure 1st config server is primary
c1: {rsConfig: {priority: 0}},
c2: {rsConfig: {priority: 0}}
}
});
assert.eq(st.config0, st.configRS.getPrimary());
// Create the "test" database while the cluster metadata is still writeable.
st.s.getDB('test').foo.insert({a: 1});
// Take down two of the config servers so the remaining one goes into SECONDARY state.
st.configRS.stop(1);
st.configRS.stop(2);
st.configRS.awaitNoPrimary();
jsTestLog("Starting a new mongos when the config servers have no primary which should work");
var mongos2 = MongoRunner.runMongos({configdb: st.configRS.getURL()});
assert.neq(null, mongos2);
var testOps = function(mongos) {
jsTestLog("Doing ops that don't require metadata writes and thus should succeed against: " +
mongos);
var initialCount = mongos.getDB('test').foo.count();
assert.writeOK(mongos.getDB('test').foo.insert({a: 1}));
assert.eq(initialCount + 1, mongos.getDB('test').foo.count());
assert.throws(function() {
mongos.getDB('config').shards.findOne();
});
mongos.setSlaveOk(true);
var shardDoc = mongos.getDB('config').shards.findOne();
mongos.setSlaveOk(false);
assert.neq(null, shardDoc);
jsTestLog("Doing ops that require metadata writes and thus should fail against: " + mongos);
assert.writeError(mongos.getDB("newDB").foo.insert({a: 1}));
assert.commandFailed(
mongos.getDB('admin').runCommand({shardCollection: "test.foo", key: {a: 1}}));
};
testOps(mongos2);
testOps(st.s);
st.stop();
}());
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