Mongoose compound indexes not being created (Too long)

Question

I'm having some issues creating multiple compound indexes on one of my schemas in MongoDB. When using MongoLab, I know some indexes are not created when they are too long, due to a naming issue. So I suspect this might be the reason why some are not created

var Schema = new mongoose.Schema({ ... });

// Created
Schema.index({
    one: 1,
    three: 1
});

// Not Created
Schema.index({
    one: 1,
    two: 1,
    three: 1,
    four: 1,
    five: 1,
    six: 1,
    seven: 1,
    eight: 1,
    nine: 1,
    ten: 1
});

Answer 1

There is a limitation to the default index name (https://docs.mongodb.org/manual/reference/limits/#Index-Name-Length)

You can specify custom index name by passing addition option object to Schema.index

Schema.index({
    one: 1,
    two: 1,
    three: 1,
    four: 1,
    five: 1,
    six: 1,
    seven: 1,
    eight: 1,
    nine: 1,
    ten: 1 }, 
    { name: 'my_index_name' }
);