There's a way to ignore fields?

Hi,

Today use elasticsearch to save logs of many application, but there's some fields that I don't want, for example, the field application, that I use only to define the index name.

There's a way in the mapping of index to no index or store this field?

You can set things like index: no and store: no in your mappings, but if you don't want them then don't send them to ES.