65 lines
1.8 KiB
JavaScript
65 lines
1.8 KiB
JavaScript
/**
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* Tests that writeConcern 'majority' writes succeed and are visible in a replica set that has one
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* data-bearing node and two arbiters.
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*
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* @tags: [requires_majority_read_concern, requires_fcv_53]
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*/
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import {ReplSetTest} from "jstests/libs/replsettest.js";
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function log(arg) {
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jsTest.log(tojson(arg));
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}
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// Set up a set and grab things for later.
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var name = "read_majority_two_arbs";
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var replTest = new ReplSetTest({name: name, nodes: 3});
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replTest.startSet({setParameter: {allowMultipleArbiters: true}});
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var nodes = replTest.nodeList();
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var config = {
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"_id": name,
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"members": [
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{"_id": 0, "host": nodes[0]},
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{"_id": 1, "host": nodes[1], arbiterOnly: true},
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{"_id": 2, "host": nodes[2], arbiterOnly: true}
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]
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};
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replTest.initiate(config);
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var primary = replTest.getPrimary();
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var db = primary.getDB(name);
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var t = db[name];
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function doRead(readConcern) {
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readConcern.maxTimeMS = 3000;
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var res = assert.commandWorked(t.runCommand('find', readConcern));
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var docs = (new DBCommandCursor(db, res)).toArray();
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assert.gt(docs.length, 0, "no docs returned!");
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return docs[0].state;
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}
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function doDirtyRead() {
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log("doing dirty read");
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var ret = doRead({"readConcern": {"level": "local"}});
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log("done doing dirty read.");
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return ret;
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}
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function doCommittedRead() {
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log("doing committed read");
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var ret = doRead({"readConcern": {"level": "majority"}});
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log("done doing committed read.");
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return ret;
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}
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jsTest.log("doing write");
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assert.commandWorked(
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t.save({_id: 1, state: 0}, {writeConcern: {w: "majority", wtimeout: 10 * 1000}}));
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jsTest.log("doing read");
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assert.eq(doDirtyRead(), 0);
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jsTest.log("doing committed read");
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assert.eq(doCommittedRead(), 0);
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jsTest.log("stopping replTest; test completed successfully");
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replTest.stopSet();
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