[GitHub] [hadoop] ZanderXu opened a new pull request, #5123: HDFS-16837. [RBF SBN] ClientGSIContext should merge RouterFederatedStates to get the max state id for each namespaces

[GitBox]

ZanderXu opened a new pull request, #5123:
URL: https://github.com/apache/hadoop/pull/5123

   ### Description of PR
   Jira: [HDFS-16837](https://issues.apache.org/jira/browse/HDFS-16837)
   
   ClientGSIContext should merge local and remote RouterFederatedState to get 
the max state id for each namespace.
   
   And the related code as bellows:
   ```
   @Override
   public synchronized void receiveResponseState(RpcResponseHeaderProto header) 
{
     if (header.hasRouterFederatedState()) {
       // BUG here
       routerFederatedState = header.getRouterFederatedState();
     } else {
       lastSeenStateId.accumulate(header.getStateId());
     }
   } 
   ```


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