Is it possible to update/set fielddata cache expire time per index

Is fielddata cache expire timehttp://www.elasticsearch.org/guide/en/elasticsearch/reference/current/index-modules-fielddata.html a
per-index-level setting ?

Looking at the documentation for index settings it doesn't seem to be
available although the filter cache seems to have an index level expiry
settinghttp://www.elasticsearch.org/guide/en/elasticsearch/reference/current/indices-update-settings.html#indices-update-settings
.

If not available is there a drawback of allowing this setting per index
level ?

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