elek commented on a change in pull request #1421:
URL: https://github.com/apache/hadoop-ozone/pull/1421#discussion_r491953506



##########
File path: 
hadoop-hdds/interface-server/src/main/proto/ScmServerDatanodeHeartbeatProtocol.proto
##########
@@ -390,6 +404,14 @@ message ClosePipelineCommandProto {
   required int64 cmdId = 2;
 }
 
+/**
+ * This command asks the DataNode to finalize a new HDDS layout version.
+ */
+message FinalizeNewLayoutVersionCommandProto {
+  required bool finalizeNewHDDSLayoutVersion = 1 [default = false];

Review comment:
       Is there any use case for this noop request? Will it be used by 
somebody? Why do we need this field?




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