HADOOP-12773. HBase classes fail to load with client/job classloader enabled (sjlee)

(cherry picked from commit 58acbf940a92ef8a761208a7a743175ee7b3377d)

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -12,6 +12,9 @@ Release 2.6.5 - UNRELEASED
 
   BUG FIXES
 
+    HADOOP-12773. HBase classes fail to load with client/job classloader
+    enabled (sjlee)
+
 Release 2.6.4 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-common-project/hadoop-common/src/main/resources/org.apache.hadoop.application-classloader.properties

@@ -50,6 +50,7 @@ system.classes.default=java.,\
   org.xml.sax.,\
   org.apache.commons.logging.,\
   org.apache.log4j.,\
+  -org.apache.hadoop.hbase.,\
   org.apache.hadoop.,\
   core-default.xml,\
   hdfs-default.xml,\