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2633d11eb7
* Switch from using docvalue_fields to extracting values from _source where applicable. Doing this means parsing the _source and handling the numbers parsing just like Elasticsearch is doing it when it's indexing a document. * This also introduces a minor limitation: aliases type of fields that are NOT part of a tree of sub-fields will not be able to be retrieved anymore. field_caps API doesn't shed any light into a field being an alias or not and at _source parsing time there is no way to know if a root field is an alias or not. Fields of the type "a.b.c.alias" can be extracted from docvalue_fields, only if the field they point to can be extracted from docvalue_fields. Also, not all fields in a hierarchy of fields can be evaluated to being an alias. (cherry picked from commit 8bf8a055e38f00df5f49c8d97f632f69d6e00c2c)