Today we use a sliced lock strategy for acquiring locks to prevent
concurrent updates to the same document. The number of sliced locks is
computed as a linear function of the number of logical
processors. Unfortunately, the probability of a collision against a
sliced lock is prone to the birthday problem and grows faster than
expected. In fact, the mathematics works out such that for a fixed
target probability of collision, the number of lock slices should grow
like the square of the number of logical processors. This is
less-than-ideal, and we can do better anyway. This commit introduces a
strategy for avoiding lock contention within the internal
engine. Ideally, we would only have lock contention if there were
concurrent updates to the same document. We can get close to this ideal
world by associating a lock with the ID of each document. This
association can be held in a concurrent hash map. Now, the JDK
ConcurrentHashMap also uses a sliced lock internally, but it has several
strategies for avoiding taking the locks and these locks are only held
for a very short period of time. This implementation associates a
reference count with the lock that is associated with a document ID and
automatically removes the document ID from the concurrent hash map when
the reference count reaches zero.
Relates #18060
Fix a limitation that prevent from hierarchical inner hits be defined in query dsl.
Removed the nested_path, parent_child_type and query options from inner hits dsl. These options are only set by ES
upon parsing the has_child, has_parent and nested queries are using their respective query builders.
These options are still used internally, when these options are set a new private copy is created based on the
provided InnerHitBuilder and configuring either nested_path or parent_child_type and the inner query of the query builder
being used.
Closes#11118
This change fixes the generation of plugin properties files when the
version changes. Before, it would not regenerate, and running integTest
would fail with an incompatibile version error.
Gradle has a "shortcut" which omits the target and source compatibility
we set when it thinks it is not necessary (eg gradle is running on the
same version as the target compat). However, the way we compile against
java 9 is to set javac to use java 9, while gradle still runs on java 8.
This change makes -source and -target explicit for now, until these
"optimizations" can be removed from gradle.
closes#18039
In case of x-pack the superuser role is required.
Also the code for extracting the host was simplified
Lastly the keyserver was replaced as the current one is being
unresponsive.
While returning no hits on fields that are not mapped may be fine, it is not
for fields that are mapped but not indexed (`index:false`). We should fail the
query in that case rather than returning no hits.
Switch something from an explicit toString to Strings.toString which
is the same thing but with more code reuse.
Also renamed a constant to be CONSTANT_CASE.
ObjectParser makes parsing XContent 95% easier. No more nested loops.
No more forgetting to use ParseField. Consistent handling for arrays.
Awesome. But ObjectParser doesn't support building things objects whose
constructor arguments are mixed in with the rest of its properties.
Enter ConstructingObjectParser! ConstructingObjectParser queues up
fields until all of the constructor arguments have been parsed and
then sets them on the target object.
Closes#17352
* Add isSearchable and isAggregatable (collapsed to true if any of the instances of that field are searchable or aggregatable).
* Accept wildcards in field names.
* Add a section named conflicts for fields with the same name but with incompatible types (instead of throwing an exception).
David Pilato
Shane Connelly
Clinton Gormley
Jason Tedor
Martijn van Groningen
Tal Levy
Lee Hinman
Ryan Ernst
Jay Modi
Gabriel Moskovicz
Alexander Reelsen
Mathias Fußenegger
Isabel Drost-Fromm
Isabel Drost-Fromm
Adrien Grand
Nik Everett
Jim Ferenczi