gistfile1.java

DBCollection c = mongo.getDB(Constants.DB_NAME).getCollection("B");
for (int i = 0; i < 100; i++) {
    cursors.add(c.find().limit(10).batchSize(1));
}
for (int i = 0; i < 10; i++) {
    for (DBCursor cursor : cursors) {
        cursor.next();
    }
}