add jdk.incubator.vector module support for JDK 20+

CHANGELOG.md

@@ -102,6 +102,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Support transport action names when registering NamedRoutes ([#7957](https://github.com/opensearch-project/OpenSearch/pull/7957))
 - Create concept of persistent ThreadContext headers that are unstashable ([#8291]()https://github.com/opensearch-project/OpenSearch/pull/8291)
 - Enable Partial Flat Object ([#7997](https://github.com/opensearch-project/OpenSearch/pull/7997))
+- Add jdk.incubator.vector module support for JDK 20+ ([#8601](https://github.com/opensearch-project/OpenSearch/pull/8601))
 
 ### Dependencies
 - Bump `com.azure:azure-storage-common` from 12.21.0 to 12.21.1 (#7566, #7814)
@@ -180,4 +181,4 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 ### Security
 
 [Unreleased 3.0]: https://github.com/opensearch-project/OpenSearch/compare/2.x...HEAD
-[Unreleased 2.x]: https://github.com/opensearch-project/OpenSearch/compare/2.8...2.x
+[Unreleased 2.x]: https://github.com/opensearch-project/OpenSearch/compare/2.8...2.x

build.gradle

@@ -424,6 +424,9 @@ gradle.projectsEvaluated {
         if (BuildParams.runtimeJavaVersion > JavaVersion.VERSION_17) {
           task.jvmArgs += ["-Djava.security.manager=allow"]
         }
+        if (BuildParams.runtimeJavaVersion >= JavaVersion.VERSION_20) {
+          task.jvmArgs += ["--add-modules=jdk.incubator.vector"]
+        }
       }
     }
 

distribution/src/config/jvm.options

@@ -78,3 +78,7 @@ ${error.file}
 
 # Explicitly allow security manager (https://bugs.openjdk.java.net/browse/JDK-8270380)
 18-:-Djava.security.manager=allow
+
+# JDK 20+ Incubating Vector Module for SIMD optimizations;
+# disabling may reduce performance on vector optimized lucene
+20:--add-modules=jdk.incubator.vector