Generalizes three previously hard coded things in painless into
generic concepts:
1. The "main method" is no longer hardcoded to:
```
public abstract Object execute(Map<String, Object> params,
Scorer scorer, LeafDocLookup doc, Object value);
```
Instead Painless's compiler takes an interface and implements it. It looks like:
```
public interface SomeScript {
// Argument names we expose to Painless scripts
String[] ARGUMENTS = new String[] {"a", "b"};
// Method implemented by Painless script. Must be named execute but can have any parameters or return any value.
Object execute(String a, int b);
// Is the "a" argument used by the script?
boolean uses$a();
}
SomeScript script = scriptEngine.compile(SomeScript.class, null, "the_script_here", emptyMap());
Object result = script.execute("a", 1);
```
`PainlessScriptEngine` now compiles all scripts to the new
`GenericElasticsearchScript` interface by default for compatibility
with the rest of Elasticsearch until it is able to use this new
ability.
2. `_score` and `ctx` are no longer hardcoded to be extracted from
`#score` and `params` respectively. Instead Painless's default
implementation of Elasticsearch scripts uses the `uses$_score` and
`uses$ctx` methods to determine if it is used and gives them
dummy values if they are not used.
3. Throwing the `ScriptException` is now handled by the Painless
script itself. That way Painless doesn't have to leak the metadata
that is required to build the fancy stack trace. And all painless scripts
get the fancy stack trace.
In #23253 we added an the ability to incrementally reduce search results.
This change exposes the parameter to control the batch since and therefore
the memory consumption of a large search request.
InternalTopHits uses "==" to compare hit scores and fails when score is NaN.
This commit changes the comparaison to always use Double.compare.
Relates #23253
We can and should randomly reduce down to a single result before
we passing the aggs to the final reduce. This commit changes the logic
to do that and ensures we don't trip the assertions the previous imple tripped.
Relates to #23253
Previously we calculated Netty' receive predictor size for HTTP and transport
traffic based on available memory and worker nodes. This resulted in a receive
predictor size between 64kb and 512kb. In our benchmarks this leads to increased
GC pressure.
With this commit we set Netty's receive predictor size to 32kb. This value is in
a sweet spot between heap memory waste (-> GC pressure) and effect on request
metrics (achieved throughput and latency numbers).
Closes#23185
Today all query results are buffered up until we received responses of
all shards. This can hold on to a significant amount of memory if the number of
shards is large. This commit adds a first step towards incrementally reducing
aggregations results if a, per search request, configurable amount of responses
are received. If enough query results have been received and buffered all so-far
received aggregation responses will be reduced and released to be GCed.
In the packaging tests we make some requests to Elasticsearch as part of
the tests. These requests were not setting the content-type header. This
commit addresses this.
In the packaging tests we make some requests to Elasticsearch as part of
the tests. These requests were not setting the content-type header. This
commit addresses this.
Today, the relationship between Lucene and the translog is rather
simple: every document not in Lucene is guaranteed to be in the
translog. We need a stronger guarantee from the translog though, namely
that it can replay all operations after a certain sequence number. For
this to be possible, the translog has to made sequence-number aware. As
a first step, we introduce the min and max sequence numbers into the
translog so that each generation knows the possible range of operations
contained in the generation. This will enable future work to keep around
all generations containing operations after a certain sequence number
(e.g., the global checkpoint).
Relates #22822
A follow up to #23202, this adds parsing from xContent and tests to the four Suggestion implementations
and the top level suggest element to be used later when parsing the entire SearchResponse.
This commit cleans up some parsing tests added from the High Level Rest Client: IndexResponseTests, DeleteResponseTests, UpdateResponseTests, BulkItemResponseTests.
These tests are now more uniform with the others test-from-to-XContent tests we have, they now shuffle the XContent fields before parsing, the asserting method for parsed objects does not used a Map<String, Object> anymore, and buggy equals/hasCode methods in ShardInfo and ShardInfo.Failure have been removed.
This commit enforces the requirement of Content-Type for the REST layer and removes the deprecated methods in transport
requests and their usages.
While doing this, it turns out that there are many places where *Entity classes are used from the apache http client
libraries and many of these usages did not specify the content type. The methods that do not specify a content type
explicitly have been added to forbidden apis to prevent more of these from entering our code base.
Relates #19388
The elastic images used for testing different systems now have java
installed in the base image. This commit removes the installation of
java, which should make the packagingTest runs more stable, as they will
not depend on flaky system repository mirrors.
The file /proc/self/cgroup lists the control groups to which the process
belongs. This file is a colon separated list of three fields:
1. a hierarchy ID number
2. a comma-separated list of hierarchies
3. the pathname of the control group in the hierarchy
The regex pattern for this contains a bug for the second field. It
allows one or two entries in the comma-separated list, but not
more. This commit fixes the pattern to allow one or more entires in the
comma-separated list.
Relates #23219
These images have been rebuilt to be preloaded with java 8 installed.
This change re-enables the systems. It also removes some redundancy in
the rpm checks I found while testing the new images, and fixes a
potential issue with generated resources in plugins where a stale dir
can cause junk to get into the distribution.
Nik Everett
Jack Conradson
Jim Ferenczi
Simon Willnauer
Tanguy Leroux
Daniel Mitterdorfer
Martin Scholz
Jason Tedor
Glen Smith
Christoph Büscher
David Pilato
Ryan Ernst
Jay Modi
Adrien Grand
javanna
Yuhao Bi
Andreas Roussos