Upgrading Guava to 20.0 (apache#7)

Author: arvindkandhare

bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/Journal.java

@@ -813,9 +813,10 @@ public void run() {
         ZeroBuffer.put(paddingBuff);
         JournalChannel logFile = null;
         forceWriteThread.start();
-        Stopwatch journalAllocationWatcher = new Stopwatch();
-        Stopwatch journalCreationWatcher = new Stopwatch();
-        Stopwatch journalFlushWatcher = new Stopwatch();
+        Stopwatch journalAllocationWatcher = Stopwatch.createUnstarted();
+        Stopwatch journalCreationWatcher = Stopwatch.createUnstarted();
+        Stopwatch journalFlushWatcher = Stopwatch.createUnstarted();
+
         long batchSize = 0;
         try {
             List<Long> journalIds = listJournalIds(journalDirectory, null);

bookkeeper-server/src/main/java/org/apache/bookkeeper/replication/ReplicationWorker.java

@@ -205,7 +205,7 @@ private void rereplicate() throws InterruptedException, BKException,
         long ledgerIdToReplicate = underreplicationManager
                 .getLedgerToRereplicate();
 
-        Stopwatch stopwatch = new Stopwatch().start();
+        Stopwatch stopwatch = Stopwatch.createStarted();
         boolean success = false;
         try {
             success = rereplicate(ledgerIdToReplicate);

pom.xml

@@ -61,7 +61,7 @@
     <!-- ProtocolBuffer version -->
     <protobuf.version>2.4.1</protobuf.version>
     <!-- Guava Version -->
-    <guava.version>16.0</guava.version>
+    <guava.version>20.0</guava.version>
     <netty.version>3.9.4.Final</netty.version>
     <zookeeper.version>3.5.1-alpha</zookeeper.version>
   </properties>