HDFS-6755. There is an unnecessary sleep in the code path where DFSOutputStream#close gives up its attempt to contact the namenode (mitdesai21 via cmccabe)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1613523 13f79535-47bb-0310-9956-ffa450edef68

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -62,6 +62,10 @@ Release 2.6.0 - UNRELEASED
     HDFS-6701. Make seed optional in NetworkTopology#sortByDistance.
     (Ashwin Shankar via wang)
 
+    HDFS-6755. There is an unnecessary sleep in the code path where
+    DFSOutputStream#close gives up its attempt to contact the namenode
+    (mitdesai21 via cmccabe)
+
   OPTIMIZATIONS
 
     HDFS-6690. Deduplicate xattr names in memory. (wang)

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSOutputStream.java

@@ -2142,12 +2142,12 @@ public class DFSOutputStream extends FSOutputSummer
             throw new IOException(msg);
         }
         try {
-          Thread.sleep(localTimeout);
           if (retries == 0) {
             throw new IOException("Unable to close file because the last block"
                 + " does not have enough number of replicas.");
           }
           retries--;
+          Thread.sleep(localTimeout);
           localTimeout *= 2;
           if (Time.now() - localstart > 5000) {
             DFSClient.LOG.info("Could not complete " + src + " retrying...");