* SignificantText aggregation - like significant_terms but doesn’t require fielddata=true, recommended used with `sampler` agg to limit expense of tokenizing docs and takes optional `filter_duplicate_text`:true setting to avoid stats skew from repeated sections of text in search results.
Closes#23674
Adds a "magic" key to the yaml testing stash mostly for use with
documentation tests. When unstashing an object, `$_path` is the
path into the current position in the object you are unstashing.
This means that in docs tests you can use
`// TESTRESPONSEs/somevalue/$body.${_path}/` to mean "replace
`somevalue` with whatever is the response in the same position."
Compare how you must carefully mock out all the numbers in the profile
response without this change:
```
// TESTRESPONSE[s/"id": "\[2aE02wS1R8q_QFnYu6vDVQ\]\[twitter\]\[1\]"/"id": $body.profile.shards.0.id/]
// TESTRESPONSE[s/"rewrite_time": 51443/"rewrite_time": $body.profile.shards.0.searches.0.rewrite_time/]
// TESTRESPONSE[s/"score": 51306/"score": $body.profile.shards.0.searches.0.query.0.breakdown.score/]
// TESTRESPONSE[s/"time_in_nanos": "1873811"/"time_in_nanos": $body.profile.shards.0.searches.0.query.0.time_in_nanos/]
// TESTRESPONSE[s/"build_scorer": 2935582/"build_scorer": $body.profile.shards.0.searches.0.query.0.breakdown.build_scorer/]
// TESTRESPONSE[s/"create_weight": 919297/"create_weight": $body.profile.shards.0.searches.0.query.0.breakdown.create_weight/]
// TESTRESPONSE[s/"next_doc": 53876/"next_doc": $body.profile.shards.0.searches.0.query.0.breakdown.next_doc/]
// TESTRESPONSE[s/"time_in_nanos": "391943"/"time_in_nanos": $body.profile.shards.0.searches.0.query.0.children.0.time_in_nanos/]
// TESTRESPONSE[s/"score": 28776/"score": $body.profile.shards.0.searches.0.query.0.children.0.breakdown.score/]
// TESTRESPONSE[s/"build_scorer": 784451/"build_scorer": $body.profile.shards.0.searches.0.query.0.children.0.breakdown.build_scorer/]
// TESTRESPONSE[s/"create_weight": 1669564/"create_weight": $body.profile.shards.0.searches.0.query.0.children.0.breakdown.create_weight/]
// TESTRESPONSE[s/"next_doc": 10111/"next_doc": $body.profile.shards.0.searches.0.query.0.children.0.breakdown.next_doc/]
// TESTRESPONSE[s/"time_in_nanos": "210682"/"time_in_nanos": $body.profile.shards.0.searches.0.query.0.children.1.time_in_nanos/]
// TESTRESPONSE[s/"score": 4552/"score": $body.profile.shards.0.searches.0.query.0.children.1.breakdown.score/]
// TESTRESPONSE[s/"build_scorer": 42602/"build_scorer": $body.profile.shards.0.searches.0.query.0.children.1.breakdown.build_scorer/]
// TESTRESPONSE[s/"create_weight": 89323/"create_weight": $body.profile.shards.0.searches.0.query.0.children.1.breakdown.create_weight/]
// TESTRESPONSE[s/"next_doc": 2852/"next_doc": $body.profile.shards.0.searches.0.query.0.children.1.breakdown.next_doc/]
// TESTRESPONSE[s/"time_in_nanos": "304311"/"time_in_nanos": $body.profile.shards.0.searches.0.collector.0.time_in_nanos/]
// TESTRESPONSE[s/"time_in_nanos": "32273"/"time_in_nanos": $body.profile.shards.0.searches.0.collector.0.children.0.time_in_nanos/]
```
To how you can cavalierly mock all the numbers at once with this change:
```
// TESTRESPONSE[s/(?<=[" ])\d+(\.\d+)?/$body.$_path/]
```
Currently a `delete document` request against a non-existing index actually **creates** this index.
With this change the `delete document` no longer creates the previously non-existing index and throws an `index_not_found` exception instead.
However as discussed in https://github.com/elastic/elasticsearch/pull/15451#issuecomment-165772026, if an external version is explicitly used, the current behavior is preserved and the index is still created and the document is marked for deletion.
Fixes#15425
Native scripts have been replaced in documentation by implementing
a ScriptEngine and they were deprecated in 5.5.0. This commit
removes the native script infrastructure for 6.0.
closes#19966
This commit adds gcs credential settings to the elasticsearch keystore.
The setting name follows the same pattern as the s3 client settings,
beginning with `gcs.client.`, followed by the client name, and then the
setting name, in this case, `credentials_file`. Using the legacy service
file setting is also deprecated.
This PR adds a new thread pool type: `fixed_auto_queue_size`. This thread pool
behaves like a regular `fixed` threadpool, except that every
`auto_queue_frame_size` operations (default: 10,000) in the thread pool,
[Little's Law](https://en.wikipedia.org/wiki/Little's_law) is calculated and
used to adjust the pool's `queue_size` either up or down by 50. A minimum and
maximum is taken into account also. When the min and max are the same value, a
regular fixed executor is used instead.
The `SEARCH` threadpool is changed to use this new type of thread pool. However,
the min and max are both set to 1000, meaning auto adjustment is opt-in rather
than opt-out.
Resolves#3890
In scripts (at least some of the languages), the terms dictionary and
postings can be access with the special _index variable. This is for
very advanced use cases which want to do their own scoring. The problem
is segment level statistics must be recomputed for every document.
Additionally, this is not friendly to the terms index caching as the
order of looking up terms should be controlled by lucene.
This change removes _index from scripts. Anyone using it can and should
instead write a Similarity plugin, which is explicitly designed to allow
doing the calculations needed for a relevance score.
closes#19359
Today when an index is `read-only` the index is also blocked from
being deleted which sometimes is undesired since in-order to make
changes to a cluster indices must be deleted to free up space. This is
a likely scenario in a hosted environment when disk-space is limited to switch
indices read-only but allow deletions to free up space.
Our strong recommendation is disabling swap over any other alternative
to avoid the JVM from landing on disk. This commit clarifies the docs in
this regard.
* Add parent-join module
This change adds a new module named `parent-join`.
The goal of this module is to provide a replacement for the `_parent` field but as a first step this change only moves the `has_child`, `has_parent` queries and the `children` aggregation to this module.
These queries and aggregations are no longer in core but they are deployed by default as a module.
Relates #20257
This commit documents how to write a `ScriptEngine` in order to use
expert internal apis, such as using Lucene directly to find index term
statistics. These documents prepare the way to remove both native
scripts and IndexLookup.
The example java code is actually compiled and tested under a new gradle
subproject for example plugins. This change does not yet breakup
jvm-example into the new examples dir, which should be done separately.
relates #19359
relates #19966
This commit adds support for histogram and date_histogram agg compound order by refactoring and reusing terms agg order code. The major change is that the Terms.Order and Histogram.Order classes have been replaced/refactored into a new class BucketOrder. This is a breaking change for the Java Transport API. For backward compatibility with previous ES versions the (date)histogram compound order will use the first order. Also the _term and _time aggregation order keys have been deprecated; replaced by _key.
Relates to #20003: now that all these aggregations use the same order code, it should be easier to move validation to parse time (as a follow up PR).
Relates to #14771: histogram and date_histogram aggregation order will now be validated at reduce time.
Closes#23613: if a single BucketOrder that is not a tie-breaker is added with the Java Transport API, it will be converted into a CompoundOrder with a tie-breaker.
Currently, the get snapshots API (e.g. /_snapshot/{repositoryName}/_all)
provides information about snapshots in the repository, including the
snapshot state, number of shards snapshotted, failures, etc. In order
to provide information about each snapshot in the repository, the call
must read the snapshot metadata blob (`snap-{snapshot_uuid}.dat`) for
every snapshot. In cloud-based repositories, this can be expensive,
both from a cost and performance perspective. Sometimes, all the user
wants is to retrieve all the names/uuids of each snapshot, and the
indices that went into each snapshot, without any of the other status
information about the snapshot. This minimal information can be
retrieved from the repository index blob (`index-N`) without needing to
read each snapshot metadata blob.
This commit enhances the get snapshots API with an optional `verbose`
parameter. If `verbose` is set to false on the request, then the get
snapshots API will only retrieve the minimal information about each
snapshot (the name, uuid, and indices in the snapshot), and only read
this information from the repository index blob, thereby giving users
the option to retrieve the snapshots in a repository in a more
cost-effective and efficient manner.
Closes#24288
Adds a new "icu_collation" field type that exposes lucene's
ICUCollationDocValuesField. ICUCollationDocValuesField is the replacement
for ICUCollationKeyFilter which has been deprecated since Lucene 5.
Now that indices have a single type by default, we can move to the next step
and identify documents using their `_id` rather than the `_uid`.
One notable change in this commit is that I made deletions implicitly create
types. This helps with the live version map in the case that documents are
deleted before the first type is introduced. Otherwise there would be no way
to differenciate `DELETE index/foo/1` followed by `PUT index/foo/1` from
`DELETE index/bar/1` followed by `PUT index/foo/1`, even though those are
different if versioning is involved.
This commit adds support for indexing and searching a new ip_range field type. Both IPv4 and IPv6 formats are supported. Tests are updated and docs are added.
Tal Levy
Brian Lesperance
markharwood
António Ribeiro
Nik Everett
Clinton Gormley
olcbean
archana
Kristen
Oleksandr Chychkan
Jack Conradson
Jack Conradson
Ryan Ernst
debadair
Zachary Tong
Lee Hinman
Simon Willnauer
Luis Majano
Daniel Mitterdorfer
Vlad Holubiev
Jason Tedor
Jim Ferenczi
qwerty4030
Martijn van Groningen
propulkit
Chris Ivens
Ali Beyad
Matt Weber
Suhas Karanth
Adrien Grand
glefloch
Anupam
Nicholas Knize