Using doc in script but return in order

[Canappeco (Ming Zhang)]

Hello all,

I am using ES 5.6.3.
I save some float array in a field named feature, and I want to use them in script.

My mapping:

"feature" : {
    "type" : "float",
    "index" : false
},

But when I use script like doc['feature'] to get the data, the order change.
For example, my raw data is

[0.3, 0.2, 0.1]

Now I get

[0.1, 0.2, 0.3]

I don't want to change the order in the field. I know that I can use _source to get the raw data, but it is too slow.

Please give me some help. Thanks in advance!

[rjernst (Ryan Ernst)]

docvalues are sorted to allowed improved compression. If you want the original order, you either need to use _source, or encode the values into a separate field that you can decode in scripting.

[Canappeco (Ming Zhang)]

Thanks for your response.

However, it is too slow to get the raw data using _source or saving the in several fields.

Is there any way to prevent es from sorting the docvalues? I heard about that setting store to true may help, do you have any idea?

Thanks again, may you have a nice day:)