MAPREDUCE-6421. Fix findbugs warning in RMContainerAllocator.reduceNodeLabelExpression. Contributed by Brahma Reddy Battula.

(cherry picked from commit e04faf8e462a24a3ddfd8f22050e74eda4aa19ff)

hadoop-mapreduce-project/CHANGES.txt

@@ -266,6 +266,10 @@ Release 2.8.0 - UNRELEASED
     MAPREDUCE-6038. A boolean may be set error in the Word Count v2.0 in
     MapReduce Tutorial. (Tsuyoshi Ozawa via cdouglas)
 
+    MAPREDUCE-6421. Fix findbugs warning in
+    RMContainerAllocator.reduceNodeLabelExpression.
+    (Brahma Reddy Battula via aajisaka)
+
 Release 2.7.2 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-mapreduce-project/dev-support/findbugs-exclude.xml

@@ -479,6 +479,7 @@
       <Field name="reduceResourceRequest" />
       <Field name="maxReduceRampupLimit" />
       <Field name="reduceSlowStart" />
+      <Field name="reduceNodeLabelExpression" />
      </Or>
      <Bug pattern="IS2_INCONSISTENT_SYNC" />
    </Match>