This is Beta 1 of ZomboDB 2.7.0. This release tract is the first to remove parent/child queries and instead build an "invisibility map" when executing queries/aggregates that require visibility information.
Upgrading to this release DOES require a
REINDEX of all
zombodb indexes. Unfortunately, Elasticsearch doesn't allow removing the "_parent" mapping and as such makes the old-style indexes completely incompatible with the new-style. For reference: https://github.com/elastic/elasticsearch/blob/1.4/src/main/java/org/elasticsearch/index/mapper/internal/ParentFieldMapper.java#L367-370