HDFS-1254. Support append/sync via the default configuration.

(dhruba)



git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.20-append@956776 13f79535-47bb-0310-9956-ffa450edef68

CHANGES.txt

@@ -68,6 +68,9 @@ Release 0.20-append - Unreleased
     HDFS-1118. Fix socketleak on DFSClient. 
     (Zheng Shao via dhruba)
 
+    HDFS-1254. Support append/sync via the default configuration.
+    (dhruba)
+
 Release 0.20.3 - Unreleased
 
   NEW FEATURES

src/hdfs/hdfs-default.xml

@@ -355,10 +355,8 @@ creations/deletions), or "all".</description>
 
 <property>
   <name>dfs.support.append</name>
-  <value>false</value>
-  <description>Does HDFS allow appends to files?
-               This is currently set to false because there are bugs in the
-               "append code" and is not supported in any prodction cluster.
+  <value>true</value>
+  <description>This branch of HDFS supports reliable append/sync.
   </description>
 </property>