diff --git a/warehouse/ingest-core/src/main/java/datawave/ingest/mapreduce/job/MultiRFileOutputFormatter.java b/warehouse/ingest-core/src/main/java/datawave/ingest/mapreduce/job/MultiRFileOutputFormatter.java
index aaa51dd6721..2be1f6fd56a 100644
--- a/warehouse/ingest-core/src/main/java/datawave/ingest/mapreduce/job/MultiRFileOutputFormatter.java
+++ b/warehouse/ingest-core/src/main/java/datawave/ingest/mapreduce/job/MultiRFileOutputFormatter.java
@@ -145,7 +145,7 @@ public static void setCompressionTableDisallowList(Configuration conf, Set<Strin
     protected static Set<String> getCompressionTableDisallowList(Configuration conf) {
         String tableListString = conf.get(COMPRESSION_DISALLOWLIST);
         if (tableListString == null) {
-            return new HashSet<>();
+            return Collections.emptySet();
         } else {
             String[] tables = StringUtils.split(tableListString, ',');
             return new HashSet<>(Arrays.asList(tables));
diff --git a/warehouse/ingest-json/src/main/java/datawave/ingest/json/config/helper/JsonDataTypeHelper.java b/warehouse/ingest-json/src/main/java/datawave/ingest/json/config/helper/JsonDataTypeHelper.java
index 170662f1d25..a131e6a0107 100644
--- a/warehouse/ingest-json/src/main/java/datawave/ingest/json/config/helper/JsonDataTypeHelper.java
+++ b/warehouse/ingest-json/src/main/java/datawave/ingest/json/config/helper/JsonDataTypeHelper.java
@@ -73,13 +73,13 @@ public JsonObjectFlattener newFlattener() {
         } else if (null != this.getFieldAllowlist()) {
             allowlistFields = this.getFieldAllowlist();
         } else {
-            allowlistFields = new HashSet<>();
+            allowlistFields = Collections.emptySet();
         }
 
         if (null != this.getFieldDisallowlist()) {
             disallowlistFields = this.getFieldDisallowlist();
         } else {
-            disallowlistFields = new HashSet<>();
+            disallowlistFields = Collections.emptySet();
         }
 
         return new JsonIngestFlattener.Builder().jsonDataTypeHelper(this).mapKeyAllowlist(allowlistFields).mapKeyDisallowlist(disallowlistFields)