mongodb/jstests/slow1/initial_sync_many_dbs.js

/**
 * Runs initial sync on a node with many databases.
 */

(function() {
    // Skip this test if running with --nojournal and WiredTiger.
    if (jsTest.options().noJournal &&
        (!jsTest.options().storageEngine || jsTest.options().storageEngine === "wiredTiger")) {
        print("Skipping test because running WiredTiger without journaling isn't a valid" +
              " replica set configuration");
        return;
    }

    var name = 'initial_sync_many_dbs';
    var num_dbs = 32;
    var max_colls = 32;
    var num_docs = 2;
    var replSet = new ReplSetTest({
        name: name,
        nodes: 1,
    });
    replSet.startSet();
    replSet.initiate();

    var primary = replSet.getPrimary();
    jsTestLog('Seeding primary with ' + num_dbs + ' databases with up to ' + max_colls +
              ' collections each. Each collection will contain ' + num_docs + ' documents');
    for (var i = 0; i < num_dbs; i++) {
        var dbname = name + '_db' + i;
        for (var j = 0; j < (i % max_colls + 1); j++) {
            var collname = name + '_coll' + j;
            var coll = primary.getDB(dbname)[collname];
            for (var k = 0; k < num_docs; k++) {
                assert.writeOK(coll.insert({_id: k}));
            }
        }
    }

    // Add a secondary that will initial sync from the primary.
    jsTestLog('Adding node to replica set to trigger initial sync process');
    replSet.add();
    replSet.reInitiate();

    replSet.awaitSecondaryNodes(30 * 60 * 1000);
    var secondary = replSet.getSecondary();
    jsTestLog('New node has transitioned to secondary. Checking collection sizes');
    for (var i = 0; i < num_dbs; i++) {
        var dbname = name + '_db' + i;
        for (var j = 0; j < (i % max_colls + 1); j++) {
            var collname = name + '_coll' + j;
            var coll = secondary.getDB(dbname)[collname];
            assert.eq(num_docs,
                      coll.find().itcount(),
                      'collection size inconsistent with primary after initial sync: ' +
                          coll.getFullName());
        }
    }

    replSet.stopSet();
})();