HDFS-12580. Rebasing HDFS-10467 after HDFS-12447. Contributed by Inigo Goiri.

(cherry picked from commit b12440d3479f19138bc66ea59baf41eb89061906)

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterRpcServer.java

@@ -64,7 +64,7 @@ import org.apache.hadoop.hdfs.AddBlockFlag;
 import org.apache.hadoop.hdfs.DFSConfigKeys;
 import org.apache.hadoop.hdfs.DFSUtil;
 import org.apache.hadoop.hdfs.inotify.EventBatchList;
-import org.apache.hadoop.hdfs.protocol.AddECPolicyResponse;
+import org.apache.hadoop.hdfs.protocol.AddErasureCodingPolicyResponse;
 import org.apache.hadoop.hdfs.protocol.BlockStoragePolicy;
 import org.apache.hadoop.hdfs.protocol.CacheDirectiveEntry;
 import org.apache.hadoop.hdfs.protocol.CacheDirectiveInfo;
@@ -1857,8 +1857,8 @@ public class RouterRpcServer extends AbstractService implements ClientProtocol {
   }
 
   @Override
-  public AddECPolicyResponse[] addErasureCodingPolicies(
-      ErasureCodingPolicy[] arg0) throws IOException {
+  public AddErasureCodingPolicyResponse[] addErasureCodingPolicies(
+      ErasureCodingPolicy[] policies) throws IOException {
     checkOperation(OperationCategory.WRITE, false);
     return null;
   }