Mayya Sharipova 57e4d10007
Limit the number of nested documents (#27405)
Add an index level setting `index.mapping.nested_objects.limit` to control
the number of nested json objects that can be in a single document
across all fields. Defaults to 10000.

Throw an error if the number of created nested documents exceed this
limit during the parsing of a document.

Closes #26962
2017-11-22 10:16:28 -05:00

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[[breaking_70_mappings_changes]]
=== Mapping changes
==== The `_all` meta field is removed
The `_all` field deprecated in 6 have now been removed.
==== `index_options` for numeric fields has been removed
The `index_options` field for numeric fields has been deprecated in 6 and has now been removed.
==== Limiting the number of `nested` json objects
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 `index.mapping.nested_objects.limit`.