Fix change log inconsistency among branch 0.17, branch 0.18, and trunk in sections Release 0.17.2 and 0.17.1

git-svn-id: https://svn.apache.org/repos/asf/hadoop/core/branches/branch-0.17@679503 13f79535-47bb-0310-9956-ffa450edef68

Author: Hairong Kuang

CHANGES.txt

@@ -25,6 +25,9 @@ Release 0.17.2 - Unreleased
     continuously, preventing excessive logging at the namenode.
     (lohit vijayarenu via cdouglas)
 
+    HADOOP-3633. Correct exception handling in DataXceiveServer, and throttle
+    the number of xceiver threads in a data-node. (shv)
+
 Release 0.17.1 - 2008-06-23
 
   INCOMPATIBLE CHANGES
@@ -38,6 +41,9 @@ Release 0.17.1 - 2008-06-23
     HADOOP-3522. Improve documentation on reduce pointing out that
     input keys and values will be reused. (omalley)
 
+    HADOOP-3487. Balancer uses thread pools for managing its threads;
+    therefore provides better resource management. (hairong)
+
   BUG FIXES
 
     HADOOP-2159 Namenode stuck in safemode. The counter blockSafe should
@@ -65,9 +71,6 @@ Release 0.17.1 - 2008-06-23
     HADOOP-1979. Speed up fsck by adding a buffered stream. (Lohit
     Vijaya Renu via omalley)
 
-    HADOOP-3633. Correct exception handling in DataXceiveServer, and throttle
-    the number of xceiver threads in a data-node. (shv)
-
 Release 0.17.0 - 2008-05-18
 
   INCOMPATIBLE CHANGES