diff --git a/hyracks-fullstack/hyracks/hyracks-util/pom.xml b/hyracks-fullstack/hyracks/hyracks-util/pom.xml
index 419166b..52ccf2f 100644
--- a/hyracks-fullstack/hyracks/hyracks-util/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-util/pom.xml
@@ -71,6 +71,10 @@
       <groupId>org.apache.commons</groupId>
       <artifactId>commons-collections4</artifactId>
     </dependency>
+    <dependency>
+      <groupId>org.apache.logging.log4j</groupId>
+      <artifactId>log4j-api</artifactId>
+    </dependency>
   </dependencies>
 
 </project>
diff --git a/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/DiskUtil.java b/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/DiskUtil.java
index 9a65d72..a1f9346 100644
--- a/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/DiskUtil.java
+++ b/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/DiskUtil.java
@@ -24,14 +24,15 @@
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 
 import org.apache.commons.lang3.SystemUtils;
+import org.apache.logging.log4j.Level;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 
 public class DiskUtil {
 
-    private static final Logger LOGGER = Logger.getLogger(DiskUtil.class.getName());
+    private static final Logger LOGGER = LogManager.getLogger();
 
     private DiskUtil() {
         throw new AssertionError("Util class should not be initialized.");
@@ -119,7 +120,7 @@
                     LOGGER.info(line);
                 }
             } catch (IOException e) {
-                LOGGER.log(Level.WARNING, e.getMessage(), e);
+                LOGGER.log(Level.WARN, e.getMessage(), e);
             }
         }).start();
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/ExitUtil.java b/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/ExitUtil.java
index b039227..c54c9dc 100644
--- a/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/ExitUtil.java
+++ b/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/ExitUtil.java
@@ -18,12 +18,13 @@
  */
 package org.apache.hyracks.util;
 
-import java.util.logging.Logger;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 
 @SuppressWarnings("squid:S1147")
 public class ExitUtil {
 
-    private static final Logger LOGGER = Logger.getLogger(ExitUtil.class.getName());
+    private static final Logger LOGGER = LogManager.getLogger();
 
     private static final ExitThread exitThread = new ExitThread();
 
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 dcdf140..158ab66 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
@@ -23,7 +23,9 @@
 import java.util.Iterator;
 import java.util.Map;
 import java.util.Map.Entry;
-import java.util.logging.Logger;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.JsonNode;
@@ -34,7 +36,7 @@
 
 public class JSONUtil {
 
-    private static final Logger LOGGER = Logger.getLogger(JSONUtil.class.getName());
+    private static final Logger LOGGER = LogManager.getLogger();
 
     private static final String INDENT = "\t";
 
@@ -63,8 +65,8 @@
         try {
             return appendObj(new StringBuilder(), om.readTree(str), initialIndent).toString();
         } catch (IOException e) {
-            LOGGER.finest(String.valueOf(e));
-            LOGGER.finest("Could not indent JSON string, returning the input string: " + str);
+            LOGGER.trace(String.valueOf(e));
+            LOGGER.trace("Could not indent JSON string, returning the input string: " + str);
             return str;
         }
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/PidHelper.java b/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/PidHelper.java
index 410097e..5a8edbd 100644
--- a/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/PidHelper.java
+++ b/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/PidHelper.java
@@ -22,12 +22,14 @@
 import java.lang.management.RuntimeMXBean;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
-import java.util.logging.Level;
-import java.util.logging.Logger;
+
+import org.apache.logging.log4j.Level;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 
 public class PidHelper {
 
-    private static final Logger LOGGER = Logger.getLogger(PidHelper.class.getName());
+    private static final Logger LOGGER = LogManager.getLogger();
 
     private PidHelper() {
     }