WARNING: Version 5.6 of Elasticsearch has passed its EOL date.
This documentation is no longer being maintained and may be removed. If you are running this version, we strongly advise you to upgrade. For the latest information, see the current release documentation.
Numeric fields have been refactored to use a different data structure that performs better for range queries. However, since this data structure does not record document frequencies, numeric fields need to fall back to running queries in order to estimate the number of matching documents in the background set, which may incur a performance degradation.
It is recommended to use
keyword fields instead, either directly
or through a multi-field if the numeric representation is
still needed for sorting, range queries or numeric aggregations like
Now that Elasticsearch supports
ip addresses are encoded in the index
using a binary representation rather than a numeric representation. As a
consequence, the output of
ip_range aggregations does not give numeric values
size: 0 is no longer valid for the terms, significant terms and geohash grid
aggregations. Instead a size should be explicitly specified with a number greater