HDFS-8230. Erasure Coding: Ignore DatanodeProtocol#DNA_ERASURE_CODING_RECOVERY commands from standbynode if any (Contributed by Vinayakumar B)

hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-EC-7285.txt

@@ -134,3 +134,6 @@
 
     HDFS-8033. Erasure coding: stateful (non-positional) read from files in 
     striped layout (Zhe Zhang)
+
+    HDFS-8230. Erasure Coding: Ignore DatanodeProtocol#DNA_ERASURE_CODING_RECOVERY 
+    commands from standbynode if any (vinayakumarb)

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPOfferService.java

@@ -757,6 +757,7 @@ class BPOfferService {
     case DatanodeProtocol.DNA_BALANCERBANDWIDTHUPDATE:
     case DatanodeProtocol.DNA_CACHE:
     case DatanodeProtocol.DNA_UNCACHE:
+    case DatanodeProtocol.DNA_ERASURE_CODING_RECOVERY:
       LOG.warn("Got a command from standby NN - ignoring command:" + cmd.getAction());
       break;
     default: