signupDB = new Meteor.Collection('signup');

Meteor.methods({

    signupSubmit : function(postData) {

        var signinEmailExist = signinDB.findOne({
        email : postData.email
        });

        if (postData.email && signinEmailExist)
        throw new Meteor.Error(422, "exist in signinDB");

        var signupEmailExist = signupDB.findOne({
        email : postData.email
        });

        if (postData.email && signupEmailExist)
        throw new Meteor.Error(422, "exist in signupDB");       //

        var user = _.extend(_.pick(postData, 'email', 'password'), {
            insert_time : new Date().getTime()      });

        var userId = signupDB.insert(user);

        return userId;

    }

});

errorDB = new Meteor.Collection(null);

throwError = function(data) {
    errorDB.insert({data: "in throwError", del: "N"})
}

Meteor.call('signupSubmit', user, function(err) {
  errorDB.insert(err);
});

errors = new Meteor.Collection;

Accounts.createUser({
  email: email,
  password: password
}, function(err) {
  errors.insert(err);
});