Rename `fields` to `stored_fields` and add `docvalue_fields`
`stored_fields` parameter will no longer try to retrieve fields from the _source but will only return stored fields.
`fields` will throw an exception if the user uses it.
Add `docvalue_fields` as an adjunct to `fielddata_fields` which is deprecated. `docvalue_fields` will try to load the value from the docvalue and fallback to fielddata cache if docvalues are not enabled on that field.
Closes#18943
With this commit we also propagate the `canTripCircuitBreaker`
setting for the main action in TransportBroadcastByNodeAction.
Previously, we set it only on the additional action added by
this handler.
This change removes a handful of classes and methods that were simply
unused. Some of the classes were intermediate abstract classes that
added nothing to the base class they extended.
Primary relocation and indexing concurrently can currently lead to a deadlock situation as indexing operations are blocked on a (bounded) thread pool during the hand-off phase between old and new primary. This change replaces blocking of indexing operations by putting operations that cannot be executed during relocation hand-off in a queue to be executed once relocation completes.
Closes#18553.
The only reason for LifecycleComponent taking a generic type was so that
it could return that type on its start and stop methods. However, this
chaining has no practical necessity. Instead, start and stop can be
void, and a whole bunch of confusing generics disappear.
Before, a repository would maintain an index file (named 'index') per
repository, that contained the current snapshots in the repository.
This file was not atomically written, so repositories had to depend on
listing the blobs in the repository to determine what the current
snapshots are, and only rely on the index file if the repository does
not support the listBlobs operation. This could cause an incorrect view
of the current snapshots in the repository if any prior snapshot delete
operations failed to delete snapshot metadata files.
This commit introduces the atomic writing of the index file, and because
atomic writes are not guaranteed if the file already exists, we write to
a generational index file (index-N, where N is the current generation).
We also maintain an index-latest file that contains the current
generation, for those repositories that cannot list blobs.
Closes#19002
Relates #18156
These are the first aggregations with multiple `InternalAggregation`s
backing the same `AggregationBuilder`. This required a change in the
register method's signature.
This allowes embedding stash keys in string like `t${key}est`. This
allows simple string concatenation like acitons.
The test for this is in `ObjectPathTests` because `Stash` doesn't seem
to have a test on its own and it is simple enough to test embedded
stashes this way. And this is a way I expect them to be used eventually.
NodeService has an "service attributes" map, which is only
set by HttpServer on start/stop. But the only thing it puts in this map
is already available as part of the HttpServer info which is added to
node info requests. This change removes the attributes map and removes
the dependency in HttpServer on NodeService.
BytesReference should be a really simple interface, yet it has a gazillion
ways to achieve the same this. Methods like `#hasArray`, `#toBytesArray`, `#copyBytesArray`
`#toBytesRef` `#bytes` are all really duplicates. This change simplifies the interface
dramatically and makes implementations of it much simpler. All array access has been removed
and is streamlined through a single `#toBytesRef` method. Utility methods to materialize a
compact byte array has been added too for convenience.
Migrates the `stats` and `extended_stats` aggregations and pipeline
aggregations from the special purpose aggregations streams to
`NamedWriteable`. These are the first pipeline aggregations so this
adds the infrastructure to support both streams and `NamedWriteable`s
for pipeline aggregations.
When we introduced docs testing we added a special case for $body in Stash, so that the last stashed body could be evaluated, and expressions like "$body.took" could be extracted out of it. We can instead do that for any object in the stash, by simply wrapping the internal map in an ObjectPath instance. We can then drop the special stashResponse method and go back to using the ordinary stashValue too.
The downside of this change is that it adds a feature that may not be supported by other REST test runners, namely the evaluation of compouned paths from the stash. If we have "object" stashed as an object, it is now possible to extract directly each subobject of it as well e.g. "object.subobject.field1". None of the current REST tests rely on this, but our docs snippets tests do.
