infraio commented on a change in pull request #2397:
URL: https://github.com/apache/hbase/pull/2397#discussion_r490646533



##########
File path: 
hbase-server/src/main/java/org/apache/hadoop/hbase/master/MasterRpcServices.java
##########
@@ -3321,4 +3325,33 @@ public UpdateRSGroupConfigResponse 
updateRSGroupConfig(RpcController controller,
     }
     return builder.build();
   }
+
+  @Override
+  public RegionServerReportResponse replicationServerReport(RpcController 
controller,
+      RegionServerReportRequest request) throws ServiceException {
+    try {
+      master.checkServiceStarted();
+      int versionNumber = 0;
+      String version = "0.0.0";
+      VersionInfo versionInfo = VersionInfoUtil.getCurrentClientVersionInfo();
+      if (versionInfo != null) {
+        version = versionInfo.getVersion();

Review comment:
       The difference of version and versionNumber is?




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