diff --git a/lang/java/reef-webserver/src/main/java/org/apache/reef/webserver/HttpServerReefEventHandler.java b/lang/java/reef-webserver/src/main/java/org/apache/reef/webserver/HttpServerReefEventHandler.java
index ad6f9b0214..dfa3362a3a 100644
--- a/lang/java/reef-webserver/src/main/java/org/apache/reef/webserver/HttpServerReefEventHandler.java
+++ b/lang/java/reef-webserver/src/main/java/org/apache/reef/webserver/HttpServerReefEventHandler.java
@@ -29,6 +29,7 @@
 import org.apache.reef.util.logging.LoggingScopeFactory;
 import org.apache.reef.util.logging.LoggingScopeImpl;
 import org.apache.reef.wake.EventHandler;
+
 import javax.inject.Inject;
 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServletResponse;
@@ -38,6 +39,7 @@
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Paths;
+import java.util.Arrays;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
@@ -169,20 +171,22 @@ public void onHttpRequest(
       writeLines(response, result, "Current Stages...");
       break;
     case "logfile":
-      final List names = parsedHttpRequest.getQueryMap().get("filename");
+      final List<String> names = parsedHttpRequest.getQueryMap().get("filename");
+      final PrintWriter writer = response.getWriter();
       if (names == null || names.size() == 0) {
-        response.getWriter().println(String.format("File name is not provided"));
-      }
-
-      final String fileName = (String)names.get(0);
-      if (!fileName.equals(driverStdoutFile) && !fileName.equals(driverStderrFile)) {
-        response.getWriter().println(String.format("Unsupported file names: [%s] ", fileName));
-      }
-      try {
-        final byte[] outputBody = readFile((String) names.get(0)).getBytes(StandardCharsets.UTF_8);
-        response.getOutputStream().write(outputBody);
-      } catch(final IOException e) {
-        response.getWriter().println(String.format("Cannot find the log file: [%s].", fileName));
+        writer.println("File name is not provided");
+      } else {
+        final String fileName = names.get(0);
+        if (!fileName.equals(driverStdoutFile) && !fileName.equals(driverStderrFile)) {
+          writer.println(String.format("Unsupported file names: [%s] ", fileName));
+        } else {
+          try {
+            final byte[] outputBody = readFile(fileName).getBytes(StandardCharsets.UTF_8);
+            writer.print(Arrays.toString(outputBody));
+          } catch (final IOException e) {
+            writer.println(String.format("Cannot find the log file: [%s].", fileName));
+          }
+        }
       }
       break;
     // TODO[JIRA REEF-798] Use this provider in the HTTP
@@ -280,7 +284,7 @@ private void writeEvaluatorInfoWebOutput(
    * Get all evaluator ids and send it back to response as JSON.
    */
   private void writeEvaluatorsJsonOutput(final HttpServletResponse response) throws IOException {
-    LOG.log(Level.INFO, "HttpServerReefEventHandler getEvaluators is called");
+    LOG.log(Level.INFO, "HttpServerReefEventHandler writeEvaluatorsJsonOutput is called");
     try {
       final EvaluatorListSerializer serializer =
           Tang.Factory.getTang().newInjector().getInstance(EvaluatorListSerializer.class);
@@ -302,7 +306,7 @@ private void writeEvaluatorsJsonOutput(final HttpServletResponse response) throw
    */
   private void writeEvaluatorsWebOutput(final HttpServletResponse response) throws IOException {
 
-    LOG.log(Level.INFO, "HttpServerReefEventHandler getEvaluators is called");
+    LOG.log(Level.INFO, "HttpServerReefEventHandler writeEvaluatorsWebOutput is called");
 
     final PrintWriter writer = response.getWriter();
 
@@ -329,6 +333,9 @@ private void writeEvaluatorsWebOutput(final HttpServletResponse response) throws
    * Write Driver Info as JSON string to Response.
    */
   private void writeDriverJsonInformation(final HttpServletResponse response) throws IOException {
+
+    LOG.log(Level.INFO, "HttpServerReefEventHandler writeDriverJsonInformation invoked.");
+
     try {
       final DriverInfoSerializer serializer =
           Tang.Factory.getTang().newInjector().getInstance(DriverInfoSerializer.class);
@@ -355,7 +362,7 @@ private void writeResponse(final HttpServletResponse response, final String data
    */
   private void writeDriverWebInformation(final HttpServletResponse response) throws IOException {
 
-    LOG.log(Level.INFO, "HttpServerReefEventHandler writeDriverInformation invoked.");
+    LOG.log(Level.INFO, "HttpServerReefEventHandler writeDriverWebInformation invoked.");
 
     final PrintWriter writer = response.getWriter();