[GitHub] [hbase] infraio commented on a change in pull request #2071: HBASE-24743 Reject to add a peer which replicate to itself earlier

[GitBox]

infraio commented on a change in pull request #2071:
URL: https://github.com/apache/hbase/pull/2071#discussion_r455430870



##########
File path: 
hbase-server/src/main/java/org/apache/hadoop/hbase/master/replication/ReplicationPeerManager.java
##########
@@ -337,25 +347,21 @@ public void removeAllQueuesAndHFileRefs(String peerId) 
throws ReplicationExcepti
 
   private void checkPeerConfig(ReplicationPeerConfig peerConfig) throws 
DoNotRetryIOException {
     String replicationEndpointImpl = peerConfig.getReplicationEndpointImpl();
-    boolean checkClusterKey = true;
+    ReplicationEndpoint endpoint = null;
     if (!StringUtils.isBlank(replicationEndpointImpl)) {
-      // try creating a instance
-      ReplicationEndpoint endpoint;
       try {
+        // try creating a instance
         endpoint = Class.forName(replicationEndpointImpl)
           
.asSubclass(ReplicationEndpoint.class).getDeclaredConstructor().newInstance();
       } catch (Throwable e) {
         throw new DoNotRetryIOException(
           "Can not instantiate configured replication endpoint class=" + 
replicationEndpointImpl,
           e);
       }
-      // do not check cluster key if we are not 
HBaseInterClusterReplicationEndpoint
-      if (!(endpoint instanceof HBaseInterClusterReplicationEndpoint)) {
-        checkClusterKey = false;
-      }
     }
-    if (checkClusterKey) {
-      checkClusterKey(peerConfig.getClusterKey());
+    // Default is HBaseInterClusterReplicationEndpoint and only it need to 
check cluster key
+    if (endpoint == null || endpoint instanceof 
HBaseInterClusterReplicationEndpoint) {

Review comment:
       canReplicateToSameCluster() was added onlt for 
HBaseInterClusterReplicationEndpoint. But checked the code again, it was added 
to ReplicationEndpoint interface now and it is IA.Replication. So maybe 
override by user's plugglable ReplicationEndpoiint. Let me update the code to 
use canReplicateToSameCluster() again.




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