Update tests/constant to reflect new chunk size

Author: nicktindall

modules/repository-gcs/src/main/java/org/elasticsearch/repositories/gcs/GoogleCloudStorageBlobStore.java

@@ -75,9 +75,9 @@
 class GoogleCloudStorageBlobStore implements BlobStore {
 
     /**
-     * see com.google.cloud.BaseWriteChannel#DEFAULT_CHUNK_SIZE
+     * see {@link com.google.cloud.storage.BaseStorageWriteChannel#chunkSize}
      */
-    static final int SDK_DEFAULT_CHUNK_SIZE = 60 * 256 * 1024;
+    static final int SDK_DEFAULT_CHUNK_SIZE = Math.toIntExact(ByteSizeValue.ofMb(16).getBytes());
 
     private static final Logger logger = LogManager.getLogger(GoogleCloudStorageBlobStore.class);
 

modules/repository-gcs/src/test/java/org/elasticsearch/repositories/gcs/GoogleCloudStorageBlobContainerRetriesTests.java

@@ -328,8 +328,7 @@ public void testWriteBlobWithReadTimeouts() {
     }
 
     public void testWriteLargeBlob() throws IOException {
-        // See {@link com.google.cloud.storage.BaseStorageWriteChannel.BaseStorageWriteChannel}
-        final int defaultChunkSize = Math.toIntExact(ByteSizeValue.ofMb(16).getBytes());
+        final int defaultChunkSize = GoogleCloudStorageBlobStore.SDK_DEFAULT_CHUNK_SIZE;
         final int nbChunks = randomIntBetween(3, 5);
         final int lastChunkSize = randomIntBetween(1, defaultChunkSize - 1);
         final int totalChunks = nbChunks + 1;