HDFS-3837. Fix DataNode.recoverBlock findbugs warning. Contributed by Eli Collins

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1379185 13f79535-47bb-0310-9956-ffa450edef68

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

@@ -525,6 +525,8 @@ Release 2.0.1-alpha - UNRELEASED
     HDFS-3864. NN does not update internal file mtime for OP_CLOSE when reading
     from the edit log. (atm)
 
+    HDFS-3837. Fix DataNode.recoverBlock findbugs warning. (eli)
+
   BREAKDOWN OF HDFS-3042 SUBTASKS
 
     HDFS-2185. HDFS portion of ZK-based FailoverController (todd)

hadoop-hdfs-project/hadoop-hdfs/dev-support/findbugsExcludeFile.xml

@@ -273,4 +273,10 @@
        <Method name="quit" />
        <Bug pattern="DM_EXIT" />
      </Match>
+     <!-- Don't complain about recoverBlock equality check -->
+     <Match>
+       <Class name="org.apache.hadoop.hdfs.server.datanode.DataNode" />
+       <Method name="recoverBlock" />
+       <Bug pattern="EC_UNRELATED_TYPES" />
+     </Match>
  </FindBugsFilter>