elasticsearch/elasticsearch — pull request #6550 by spinscale (2014-06-18 14:46:47+00:00)
Title: Mapping: Fix possibility of losing meta configuration on field mapping update

The TTL, size, timestamp and index meta properties could be lost on an
update of a single field mapping due to a wrong comparison in the
merge method (which was caused by a wrong initialization, which marked
an update as explicitely disabled instead of unset.

Closes #5053