On ES 6.x and below, date fields (i.e. fields of "type": "date") used to accept values of the form "2018-09" (i.e. just year and month) whereas this no longer works on ES 7.x (tested on 7.3.0 and master).
This breaks recoveries from 6.x to 7.x and indexing pipelines.
On ES 6.x and below, date fields (i.e. fields of
"type": "date") used to accept values of the form"2018-09"(i.e. just year and month) whereas this no longer works on ES 7.x (tested on 7.3.0 and master).This breaks recoveries from 6.x to 7.x and indexing pipelines.