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//
// Test checks whether the balancer correctly detects a mixed set of shards
//
// Test mixed version between "latest" and "last-lts"/"last-continuous".
for (let versions of [["latest", "last-lts"], ["latest", "last-continuous"]]) {
jsTest.log("Starting cluster with shard binVersion: " + tojson(versions));
var options = {
mongosOptions: {verbose: 1, useLogFiles: true},
configOptions: {},
shardOptions: {binVersion: versions},
enableBalancer: true
};
var st = new ShardingTest({shards: 3, mongos: 1, other: options});
var mongos = st.s0;
var admin = mongos.getDB("admin");
var coll = mongos.getCollection("foo.bar");
printjson(admin.runCommand({enableSharding: coll.getDB() + ""}));
st.ensurePrimaryShard(coll.getDB().getName(), st.shard1.shardName);
printjson(admin.runCommand({shardCollection: coll + "", key: {_id: 1}}));
assert.soon(function() {
var log = cat(mongos.fullOptions.logFile);
return /multiVersion cluster detected/.test(log);
}, "multiVersion warning not printed!", 30 * 16 * 60 * 1000, 5 * 1000);
st.stop();
jsTest.log("DONE!");
}
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