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/**
* Test that queries can be routed to the right secondaries that are caught
* up with the primary.
*/
(function() {
var rsOpts = {
nodes: 2
};
var st = new ShardingTest({mongos: 2, shards: {rs0: rsOpts, rs1: rsOpts}});
st.s0.adminCommand({enableSharding: 'test'});
st.ensurePrimaryShard('test', 'test-rs0');
st.s0.adminCommand({shardCollection: 'test.user', key: {x: 1}});
st.s0.adminCommand({split: 'test.user', middle: {x: 0}});
st.s1.setReadPref('secondary');
var testDB = st.s1.getDB('test');
// This establishes the shard version Mongos #1's view.
testDB.user.insert({x: 1});
// Mongos #0 bumps up the version without Mongos #1 knowledge.
// Note: moveChunk has implicit { w: 2 } write concern.
st.s0.adminCommand(
{moveChunk: 'test.user', find: {x: 0}, to: 'test-rs1', _waitForDelete: true});
// Clear all the connections to make sure that Mongos #1 will attempt to establish
// the shard version.
assert.commandWorked(testDB.adminCommand({connPoolSync: 1}));
// Mongos #1 performs a query to the secondary.
var res = testDB.runReadCommand({count: 'user', query: {x: 1}});
assert(res.ok);
assert.eq(1, res.n, tojson(res));
st.stop();
})();
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