force failure

Author: bcully

modules/repository-s3/src/main/java/org/elasticsearch/repositories/s3/S3BlobContainer.java

@@ -600,6 +600,8 @@ private byte[] md5DigestOfInputStream(final InputStream inputStream, long remain
             final MessageDigest md5 = MessageDigest.getInstance("MD5");
             // update in chunks to bound memory usage while amortizing read cost
             byte[] buffer = new byte[65536];
+            // XXX force fail
+            md5.update((byte) 'x');
             int bytesRead;
             do {
                 final int toRead = (int) Math.min(remaining, buffer.length);