diff --git a/META-INF/MANIFEST.MF b/META-INF/MANIFEST.MF
index 9acd1931e4..77853030e3 100644
--- a/META-INF/MANIFEST.MF
+++ b/META-INF/MANIFEST.MF
@@ -1,7 +1,7 @@
 Manifest-Version: 1.0
 Ant-Version: Apache Ant 1.7.1
-Created-By: 20.1-b02 (Sun Microsystems Inc.)
+Created-By: 20.2-b06 (Sun Microsystems Inc.)
 Implementation-Title: Voldemort
-Implementation-Version: 1.1.4
+Implementation-Version: 1.1.7
 Implementation-Vendor: LinkedIn
 
diff --git a/src/java/voldemort/store/readonly/io/MemLock.java b/src/java/voldemort/store/readonly/io/MemLock.java
index 5aa0571ab5..c514151612 100644
--- a/src/java/voldemort/store/readonly/io/MemLock.java
+++ b/src/java/voldemort/store/readonly/io/MemLock.java
@@ -13,7 +13,7 @@
 
 public class MemLock implements Closeable {
 
-    private static final Logger log = Logger.getLogger(MemLock.class);
+    private static final Logger logger = Logger.getLogger(MemLock.class);
 
     private Pointer pa;
     private long length;
@@ -33,8 +33,8 @@ public class MemLock implements Closeable {
      */
     public MemLock(File file, FileDescriptor descriptor, long offset, long length)
                                                                                   throws IOException {
-
-        log.debug("mlocking " + file + " with length " + length);
+        if(logger.isDebugEnabled())
+            logger.debug("mlocking " + file + " with length " + length);
 
         this.setFile(file);
         this.setDescriptor(descriptor);
@@ -61,7 +61,8 @@ public void close() throws IOException {
         mman.munlock(pa, length);
         mman.munmap(pa, length);
 
-        log.debug("munlocking " + file + " with length " + length);
+        if(logger.isDebugEnabled())
+            logger.debug("munlocking " + file + " with length " + length);
 
     }
 
diff --git a/src/java/voldemort/store/readonly/io/jna/mman.java b/src/java/voldemort/store/readonly/io/jna/mman.java
index 2e82d1fc5d..f59f8efaf8 100644
--- a/src/java/voldemort/store/readonly/io/jna/mman.java
+++ b/src/java/voldemort/store/readonly/io/jna/mman.java
@@ -46,8 +46,8 @@ public static Pointer mmap(long len, int prot, int flags, int fildes, long off)
                                        new NativeLong(off));
 
         if(Pointer.nativeValue(result) == -1) {
-
-            logger.debug(errno.strerror());
+            if(logger.isDebugEnabled())
+                logger.debug(errno.strerror());
         }
 
         return result;
@@ -59,7 +59,8 @@ public static int munmap(Pointer addr, long len) throws IOException {
         int result = Delegate.munmap(addr, new NativeLong(len));
 
         if(result != 0) {
-            logger.debug(errno.strerror());
+            if(logger.isDebugEnabled())
+                logger.debug(errno.strerror());
         }
 
         return result;
@@ -70,12 +71,13 @@ public static void mlock(Pointer addr, long len) throws IOException {
 
         int res = Delegate.mlock(addr, new NativeLong(len));
         if(res != 0) {
-            String error = errno.strerror();
-            logger.warn("Mlock failed probably because of insufficient privileges");
-            logger.debug(error);
-            logger.debug(res);
+            if(logger.isDebugEnabled()) {
+                logger.debug("Mlock failed probably because of insufficient privileges, errno:"
+                             + errno.strerror() + ", return value:" + res);
+            }
         } else {
-            logger.debug("Mlock successfull");
+            if(logger.isDebugEnabled())
+                logger.debug("Mlock successfull");
 
         }
 
@@ -87,11 +89,12 @@ public static void mlock(Pointer addr, long len) throws IOException {
     public static void munlock(Pointer addr, long len) throws IOException {
 
         if(Delegate.munlock(addr, new NativeLong(len)) != 0) {
-            logger.warn(errno.strerror());
+            if(logger.isDebugEnabled())
+                logger.debug("munlocking failed with errno:" + errno.strerror());
         } else {
-            logger.debug("munlocking region");
+            if(logger.isDebugEnabled())
+                logger.debug("munlocking region");
         }
-
     }
 
     static class Delegate {
@@ -122,13 +125,13 @@ public static void main(String[] args) throws Exception {
         File file = new File(path);
         FileInputStream in = new FileInputStream(file);
         int fd = voldemort.store.readonly.io.Native.getFd(in.getFD());
-
-        logger.debug("File descriptor is: " + fd);
+        if(logger.isDebugEnabled())
+            logger.debug("File descriptor is: " + fd);
 
         // mmap a large file...
         Pointer addr = mmap(file.length(), PROT_READ, mman.MAP_SHARED | mman.MAP_ALIGN, fd, 0L);
-
-        logger.debug("mmap address is: " + Pointer.nativeValue(addr));
+        if(logger.isDebugEnabled())
+            logger.debug("mmap address is: " + Pointer.nativeValue(addr));
 
         // try to mlock it directly
         mlock(addr, file.length());