Merge branch 'main' into transport0

Author: jdconrad

benchmarks/src/main/java/org/elasticsearch/benchmark/vector/OptimizedScalarQuantizerBenchmark.java

@@ -43,7 +43,6 @@ public class OptimizedScalarQuantizerBenchmark {
 
     float[] vector;
     float[] centroid;
-    byte[] legacyDestination;
     int[] destination;
 
     @Param({ "1", "4", "7" })
@@ -55,7 +54,6 @@ public class OptimizedScalarQuantizerBenchmark {
     public void init() {
         ThreadLocalRandom random = ThreadLocalRandom.current();
         // random byte arrays for binary methods
-        legacyDestination = new byte[dims];
         destination = new int[dims];
         vector = new float[dims];
         centroid = new float[dims];
@@ -66,16 +64,9 @@ public void init() {
     }
 
     @Benchmark
-    public byte[] scalar() {
-        osq.legacyScalarQuantize(vector, legacyDestination, bits, centroid);
-        return legacyDestination;
-    }
-
-    @Benchmark
-    @Fork(jvmArgsPrepend = { "--add-modules=jdk.incubator.vector" })
-    public byte[] legacyVector() {
-        osq.legacyScalarQuantize(vector, legacyDestination, bits, centroid);
-        return legacyDestination;
+    public int[] scalar() {
+        osq.scalarQuantize(vector, destination, bits, centroid);
+        return destination;
     }
 
     @Benchmark

docs/changelog/131599.yaml

@@ -0,0 +1,5 @@
+pr: 131599
+summary: Speed up `OptimizedScalarQuantizer`
+area: Vector Search
+type: enhancement
+issues: []

docs/changelog/131630.yaml

@@ -0,0 +1,5 @@
+pr: 131630
+summary: Fix memory usage estimation for ELSER models
+area: Machine Learning
+type: bug
+issues: []

docs/changelog/131677.yaml

@@ -0,0 +1,5 @@
+pr: 131677
+summary: Throw better exception if verifying empty repo
+area: Snapshot/Restore
+type: bug
+issues: []