diff --git a/asterixdb/asterix-algebra/src/main/java/org/apache/asterix/translator/BaseClientRequest.java b/asterixdb/asterix-algebra/src/main/java/org/apache/asterix/translator/BaseClientRequest.java
index eaca53b..99cda09 100644
--- a/asterixdb/asterix-algebra/src/main/java/org/apache/asterix/translator/BaseClientRequest.java
+++ b/asterixdb/asterix-algebra/src/main/java/org/apache/asterix/translator/BaseClientRequest.java
@@ -90,7 +90,7 @@
 
     @Override
     public String toJson() {
-        return JSONUtil.convertNodeOrThrow(asJson());
+        return JSONUtil.convertNodeUnchecked(asJson());
     }
 
     protected ObjectNode asJson() {
diff --git a/asterixdb/asterix-app/src/main/java/org/apache/asterix/app/active/ActiveNotificationHandler.java b/asterixdb/asterix-app/src/main/java/org/apache/asterix/app/active/ActiveNotificationHandler.java
index 6b5cae2..284929f 100644
--- a/asterixdb/asterix-app/src/main/java/org/apache/asterix/app/active/ActiveNotificationHandler.java
+++ b/asterixdb/asterix-app/src/main/java/org/apache/asterix/app/active/ActiveNotificationHandler.java
@@ -181,10 +181,9 @@
     @Override
     public synchronized IActiveEntityEventsListener[] getEventListeners() {
         if (LOGGER.isTraceEnabled()) {
-            LOGGER.trace("getEventListeners() was called");
-            LOGGER.trace("returning " + entityEventListeners.size() + " Listeners");
+            LOGGER.trace("getEventListeners() returning {} listeners", entityEventListeners.size());
         }
-        return entityEventListeners.values().toArray(new IActiveEntityEventsListener[entityEventListeners.size()]);
+        return entityEventListeners.values().toArray(IActiveEntityEventsListener[]::new);
     }
 
     @Override
diff --git a/asterixdb/asterix-app/src/main/java/org/apache/asterix/app/result/fields/AbstractCodedMessagePrinter.java b/asterixdb/asterix-app/src/main/java/org/apache/asterix/app/result/fields/AbstractCodedMessagePrinter.java
index 6270c4c..f1eb315 100644
--- a/asterixdb/asterix-app/src/main/java/org/apache/asterix/app/result/fields/AbstractCodedMessagePrinter.java
+++ b/asterixdb/asterix-app/src/main/java/org/apache/asterix/app/result/fields/AbstractCodedMessagePrinter.java
@@ -26,6 +26,9 @@
 import org.apache.asterix.common.api.IResponseFieldPrinter;
 import org.apache.hyracks.util.JSONUtil;
 
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+
 public abstract class AbstractCodedMessagePrinter implements IResponseFieldPrinter {
 
     private enum CodedMessageField {
@@ -68,4 +71,14 @@
         }
         pw.print("]");
     }
+
+    public ObjectNode appendTo(ObjectNode objectNode) {
+        ArrayNode array = objectNode.putArray(getName());
+        messages.forEach(codedMessage -> {
+            ObjectNode error = array.addObject();
+            error.put(CodedMessageField.CODE.str(), codedMessage.getCode());
+            error.put(CodedMessageField.MSG.str(), codedMessage.getMessage());
+        });
+        return objectNode;
+    }
 }
diff --git a/asterixdb/asterix-common/src/main/java/org/apache/asterix/common/api/RequestReference.java b/asterixdb/asterix-common/src/main/java/org/apache/asterix/common/api/RequestReference.java
index eb08c09..78b6b3b 100644
--- a/asterixdb/asterix-common/src/main/java/org/apache/asterix/common/api/RequestReference.java
+++ b/asterixdb/asterix-common/src/main/java/org/apache/asterix/common/api/RequestReference.java
@@ -79,6 +79,6 @@
         object.put("time", time);
         object.put("userAgent", userAgent);
         object.put("remoteAddr", remoteAddr);
-        return JSONUtil.convertNodeOrThrow(object);
+        return JSONUtil.convertNodeUnchecked(object);
     }
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/JSONUtil.java b/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/JSONUtil.java
index 5c1b292..f937e97 100644
--- a/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/JSONUtil.java
+++ b/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/JSONUtil.java
@@ -35,6 +35,7 @@
 import com.fasterxml.jackson.databind.SerializationFeature;
 import com.fasterxml.jackson.databind.node.ArrayNode;
 import com.fasterxml.jackson.databind.node.ObjectNode;
+import com.google.common.util.concurrent.UncheckedExecutionException;
 
 public class JSONUtil {
 
@@ -53,11 +54,11 @@
         return SORTED_MAPPER.writeValueAsString(SORTED_MAPPER.treeToValue(node, Object.class));
     }
 
-    public static String convertNodeOrThrow(final JsonNode node) {
+    public static String convertNodeUnchecked(final JsonNode node) throws UncheckedExecutionException {
         try {
             return convertNode(node);
         } catch (JsonProcessingException e) {
-            throw new IllegalStateException(e);
+            throw new UncheckedExecutionException(e);
         }
     }