elasticsearch/elasticsearch — pull request #3248 by jpountz (2013-06-26 21:26:42+00:00)
Title: Ignore live docs when loading field data.

Relying on deleted documents when loading field data is dangerous because a
field data instance might be loaded for a given generation of a segment and
then loaded from the cache by an older generation of the same segment which
has fewer deleted documents. This could, for example, lead to under-estimated
facet counts.