jstests/sharding/arbiters_do_not_use_cluster_time.js


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/**
 * Tests that arbiters do not gossip clusterTime or operationTime.
 */

(function() {
"use strict";
let st = new ShardingTest({
    shards: {
        rs0: {
            nodes: [
                {arbiter: false},
                {arbiter: false},
                {arbiter: true},
                {arbiter: false},
                {arbiter: false}
            ]
        }
    }
});

jsTestLog("Started ShardingTest");

let secondaries = st.rs0.getSecondaries();

let foundArbiter = false;
for (let i = 0; i < secondaries.length; i++) {
    let conn = secondaries[i].getDB("admin");
    const res = conn.runCommand({hello: 1});
    if (res["arbiterOnly"]) {
        assert(!foundArbiter);
        foundArbiter = true;
        // nodes with disabled clocks do not gossip clusterTime and operationTime.
        assert.eq(res.hasOwnProperty("$clusterTime"), false);
        assert.eq(res.hasOwnProperty("operationTime"), false);
    } else {
        assert.eq(res.hasOwnProperty("$clusterTime"), true);
        assert.eq(res.hasOwnProperty("operationTime"), true);
    }
}
assert.eq(foundArbiter, true);
st.stop();
})();