_all field deprecated in 6 have now been removed.
This field used to index a composite key formed of the
_type and the
Now that indices cannot have multiple types, this has been removed in favour
_default_ mapping has been deprecated in 6.0 and is now no longer allowed
in 7.0. Trying to configure a
_default_ mapping on 7.x indices will result in
index_options field for numeric fields has been deprecated in 6 and has now been removed.
To safeguard against out of memory errors, the number of nested json objects within a single
document across all fields has been limited to 10000. This default limit can be changed with
the index setting
This option is useless now that all indices have at most one type.