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Make large segment vector tests resilient to memory constraints #143366

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Merged
ChrisHegarty merged 1 commit into from
Mar 2, 2026
Merged

Make large segment vector tests resilient to memory constraints #143366

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23 changes: 19 additions & 4 deletions ...e/src/test/java/org/elasticsearch/nativeaccess/jdk/JDKVectorLibraryLargeSegmentTests.java
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,9 @@
*
* <p> This is a standalone (non-parameterized) test to avoid running the 2 GB+
* allocation for every (function, size) combination in the parameterized suites.
*
* <p> These tests require sufficient direct memory (~2 GB) to be available.
* If the allocation fails due to memory constraints, the test is skipped.
*/
public class JDKVectorLibraryLargeSegmentTests extends ESTestCase {

Expand Down Expand Up @@ -59,13 +62,22 @@ public static void setup() {
assumeTrue("Vector similarity functions not available", functions != null);
}

private static MemorySegment tryAllocate(Arena arena, long size) {
try {
return arena.allocate(size);
} catch (OutOfMemoryError e) {
return null;
}
}

public void testInt8DotProductBulkWithOffsetsLargeSegment() throws Throwable {
final int dims = 128;
final int numVecs = 2;
long segmentSize = Integer.MAX_VALUE + (long) dims * numVecs;

try (Arena arena = Arena.ofConfined()) {
MemorySegment vectorsSegment = arena.allocate(segmentSize);
MemorySegment vectorsSegment = tryAllocate(arena, segmentSize);
assumeTrue("Not enough direct memory to allocate >2GB segment", vectorsSegment != null);
byte[][] vectors = new byte[numVecs][];
for (int i = 0; i < numVecs; i++) {
vectors[i] = randomByteArrayOfLength(dims);
Expand All @@ -92,7 +104,8 @@ public void testInt8SquareDistanceBulkWithOffsetsLargeSegment() throws Throwable
long segmentSize = Integer.MAX_VALUE + (long) dims * numVecs;

try (Arena arena = Arena.ofConfined()) {
MemorySegment vectorsSegment = arena.allocate(segmentSize);
MemorySegment vectorsSegment = tryAllocate(arena, segmentSize);
assumeTrue("Not enough direct memory to allocate >2GB segment", vectorsSegment != null);
byte[][] vectors = new byte[numVecs][];
for (int i = 0; i < numVecs; i++) {
vectors[i] = randomByteArrayOfLength(dims);
Expand All @@ -119,7 +132,8 @@ public void testInt8CosineBulkWithOffsetsLargeSegment() throws Throwable {
long segmentSize = Integer.MAX_VALUE + (long) dims * numVecs;

try (Arena arena = Arena.ofConfined()) {
MemorySegment vectorsSegment = arena.allocate(segmentSize);
MemorySegment vectorsSegment = tryAllocate(arena, segmentSize);
assumeTrue("Not enough direct memory to allocate >2GB segment", vectorsSegment != null);
byte[][] vectors = new byte[numVecs][];
for (int i = 0; i < numVecs; i++) {
vectors[i] = randomByteArrayOfLength(dims);
Expand All @@ -146,7 +160,8 @@ public void testFloat32DotProductBulkWithOffsetsLargeSegment() throws Throwable
long segmentSize = Integer.MAX_VALUE + (long) dims * numVecs * Float.BYTES;

try (Arena arena = Arena.ofConfined()) {
MemorySegment vectorsSegment = arena.allocate(segmentSize);
MemorySegment vectorsSegment = tryAllocate(arena, segmentSize);
assumeTrue("Not enough direct memory to allocate >2GB segment", vectorsSegment != null);
float[][] vectors = new float[numVecs][];
for (int i = 0; i < numVecs; i++) {
vectors[i] = randomFloatArray(dims);
Expand Down