// perform inserts in parallel from several clients load('jstests/libs/parallelTester.js'); let f = db.jstests_parallel_insert; f.drop(); f.createIndex({who: 1}); Random.setRandomSeed(); let t = new ParallelTester(); for (let id = 0; id < 10; ++id) { var g = new EventGenerator(id, "jstests_parallel_insert", Random.randInt(20)); for (let j = 0; j < 1000; ++j) { if (j % 50 == 0) { g.addCheckCount(j, {who: id}); } g.addInsert({i: j, who: id}); } t.add(EventGenerator.dispatch, g.getEvents()); } t.run("one or more tests failed"); assert(f.validate().valid);