From 3c392bdde73be65e4e5e5cf1a145d19cc561bce5 Mon Sep 17 00:00:00 2001
From: Brian Silverstein <bsilverstein95@gmail.com>
Date: Tue, 15 Aug 2017 16:46:12 -0400
Subject: [PATCH] Enable deletion of data files that don't have aux objects for
 S3 #3921

---
 .../java/edu/harvard/iq/dataverse/dataaccess/S3AccessIO.java  | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/main/java/edu/harvard/iq/dataverse/dataaccess/S3AccessIO.java b/src/main/java/edu/harvard/iq/dataverse/dataaccess/S3AccessIO.java
index e49327bdd74..96ea0064c99 100644
--- a/src/main/java/edu/harvard/iq/dataverse/dataaccess/S3AccessIO.java
+++ b/src/main/java/edu/harvard/iq/dataverse/dataaccess/S3AccessIO.java
@@ -465,6 +465,10 @@ public void deleteAllAuxObjects() throws IOException {
             String destinationKey = item.getKey();
             keys.add(new KeyVersion(destinationKey));
         }
+        //Check if the list of auxiliary files for a data file is empty
+        if (keys.isEmpty()) {
+            return;
+        }
         multiObjectDeleteRequest.setKeys(keys);
 
         logger.info("Trying to delete auxiliary files...");