P-C Relationship using DocValues instead of Field Data Cache


From the link here, on P-C relationships, given is the excerpt shown below.


memory vs doc values

At the time of going to press, the parent-child ID map is held in memory as
part offielddata
There are plans afoot to change the default setting to use doc values
http://www.elasticsearch.org/guide/en/elasticsearch/guide/current/doc-values.html by
default instead.

How can we track whether this is still on and being worked on as part of a
future release?


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