157 lines
4.9 KiB
Plaintext
157 lines
4.9 KiB
Plaintext
[[release-highlights-7.4.0]]
|
||
== 7.4.0 release highlights
|
||
++++
|
||
<titleabbrev>7.4.0</titleabbrev>
|
||
++++
|
||
|
||
//NOTE: The notable-highlights tagged regions are re-used in the
|
||
//Installation and Upgrade Guide
|
||
|
||
// tag::notable-highlights[]
|
||
[float]
|
||
==== Results pinning
|
||
|
||
You can use the new {ref}/query-dsl-pinned-query.html[pinned query]
|
||
to define the first records
|
||
(and the order in which they are returned)
|
||
in a result set directly within {es}.
|
||
|
||
// end::notable-highlights[]
|
||
|
||
// tag::notable-highlights[]
|
||
[float]
|
||
==== New `shape` field type
|
||
|
||
A new {ref}/shape.html[`shape`] field type has been added,
|
||
which allows you to position and query shapes
|
||
in a geometry of your choosing.
|
||
|
||
// end::notable-highlights[]
|
||
|
||
// tag::notable-highlights[]
|
||
[float]
|
||
==== Circle ingest processor
|
||
|
||
A new {ref}/ingest-circle-processor.html[circle ingest processor] has been added,
|
||
which translates circles into regular polygons (bounded by the circles).
|
||
This makes ingesting, indexing, searching, and aggregating circles both easy and efficient.
|
||
|
||
// end::notable-highlights[]
|
||
|
||
// tag::notable-highlights[]
|
||
[float]
|
||
==== Aggregations on range fields
|
||
|
||
The {ref}/search-aggregations-bucket-histogram-aggregation.html[histogram]
|
||
and {ref}/search-aggregations-bucket-datehistogram-aggregation.html[date histogram]
|
||
aggregations now support the {ref}/range.html[`range`] field type.
|
||
|
||
Range aggregations are useful
|
||
when counting ranges that overlap with specific buckets
|
||
(e.g. the number of phone calls that took place during a specific minute).
|
||
|
||
// end::notable-highlights[]
|
||
|
||
// tag::notable-highlights[]
|
||
[float]
|
||
==== Cumulative cardinality aggregation
|
||
|
||
A new {ref}/search-aggregations-pipeline-cumulative-cardinality-aggregation.html[cumulative cardinality aggregation]
|
||
has been added
|
||
as part of our ongoing effort to provide advanced aggregations.
|
||
|
||
You can use this new pipeline aggregation
|
||
to calculate a net-new total of document occurrences
|
||
within a given time range.
|
||
|
||
// end::notable-highlights[]
|
||
|
||
// tag::notable-highlights[]
|
||
[float]
|
||
==== Snapshot lifecycle management
|
||
|
||
We’re introducing {ref}/getting-started-snapshot-lifecycle-management.html[snapshot lifecycle management (SLM)],
|
||
which allows an administrator to define policies,
|
||
via API or {kibana-ref}/index-lifecycle-policies.html[{kib} UI],
|
||
that manage when and how often snapshots are taken.
|
||
You can use SLM
|
||
to ensure that appropriate, recent backups are ready
|
||
if disaster strikes
|
||
or you need to restore {es} data.
|
||
|
||
// end::notable-highlights[]
|
||
|
||
// tag::notable-highlights[]
|
||
[float]
|
||
==== API key management
|
||
|
||
New {ref}/security-privileges.html[cluster privileges] to manage API keys have been added,
|
||
allowing cluster administrators to manage everything,
|
||
and regular users to manage their own keys.
|
||
Users can create API keys
|
||
and use them to provide long-term credentials
|
||
while interacting with {es}.
|
||
|
||
// end::notable-highlights[]
|
||
|
||
// tag::notable-highlights[]
|
||
[float]
|
||
==== TLS settings for email notifications
|
||
|
||
Notifications may contain sensitive information that must be protected over the wire. This requires that communication with the mail server is encrypted and authenticated properly.
|
||
{es} now supports custom {ref}/notification-settings.html#ssl-notification-smtp-settings[TLS settings] for email notifications,
|
||
allowing secure connections to servers with custom security configuration.
|
||
|
||
// end::notable-highlights[]
|
||
|
||
// tag::notable-highlights[]
|
||
[float]
|
||
==== Automatic query cancellation
|
||
|
||
{es} now automatically terminates queries
|
||
sent through the `_search` endpoint
|
||
when the initiating connection is closed.
|
||
|
||
// end::notable-highlights[]
|
||
|
||
// tag::notable-highlights[]
|
||
[float]
|
||
==== Support for AdoptOpenJDK
|
||
|
||
AdoptOpenJDK 13 is now supported and shipped with {es} as the pre-bundled JDK.
|
||
|
||
If you want to use your own JDK,
|
||
you can still do so by setting `JAVA_HOME` before starting Elasticsearch.
|
||
|
||
The availability of a notarized AdoptOpenJDK package
|
||
(per the new requirements for software running on macOS Catalina)
|
||
facilitates notarization of {es} for continued support on macOS.
|
||
|
||
// end::notable-highlights[]
|
||
|
||
// tag::notable-highlights[]
|
||
[float]
|
||
==== Regression analysis - Experimental
|
||
|
||
{ml-docs}/dfa-regression.html[Regression analysis] is an experimental machine learning process
|
||
for estimating the relationships among a number of feature variables and a dependent variable,
|
||
then making further predictions based on the described relationship.
|
||
|
||
// end::notable-highlights[]
|
||
|
||
// tag::notable-highlights[]
|
||
[float]
|
||
==== New vector distance functions for document script scoring - Experimental
|
||
|
||
Two experimential similarity measurements—
|
||
Manhattan distance (L1 norm)
|
||
and Euclidean distance (L2 norm)—
|
||
have been added.
|
||
Like the dot product and cosine similarity,
|
||
the Euclidean and Manhattan distances are provided as {ref}/query-dsl-script-score-query.html#vector-functions[predefined Painless functions]
|
||
so that they may be incorporated with other query elements
|
||
as part of a {ref}/query-dsl-script-score-query.html[script_score] query.
|
||
|
||
// end::notable-highlights[]
|
||
|