diff --git a/x-pack/plugin/blob-cache/src/main/java/org/elasticsearch/blobcache/shared/SharedBlobCacheService.java b/x-pack/plugin/blob-cache/src/main/java/org/elasticsearch/blobcache/shared/SharedBlobCacheService.java
index c5ef1d7c2bf1d..46cc2ee75bf3b 100644
--- a/x-pack/plugin/blob-cache/src/main/java/org/elasticsearch/blobcache/shared/SharedBlobCacheService.java
+++ b/x-pack/plugin/blob-cache/src/main/java/org/elasticsearch/blobcache/shared/SharedBlobCacheService.java
@@ -1116,7 +1116,9 @@ private int readSingleRegion(
             RangeMissingHandler writer,
             int region
         ) throws InterruptedException, ExecutionException {
-            final PlainActionFuture<Integer> readFuture = new PlainActionFuture<>();
+            final PlainActionFuture<Integer> readFuture =  new UnsafePlainActionFuture<>(
+                BlobStoreRepository.STATELESS_SHARD_PREWARMING_THREAD_NAME
+            );
             final CacheFileRegion fileRegion = get(cacheKey, length, region);
             final long regionStart = getRegionStart(region);
             fileRegion.populateAndRead(