[jira] [Created] (HDFS-16073) Remove redundant RPC requests for getFileLinkInfo in ClientNamenodeProtocolTranslatorPB

["lei w (Jira)" <ji...@apache.org>]

lei w created HDFS-16073:
----------------------------

             Summary: Remove redundant RPC requests for getFileLinkInfo in ClientNamenodeProtocolTranslatorPB
                 Key: HDFS-16073
                 URL: https://issues.apache.org/jira/browse/HDFS-16073
             Project: Hadoop HDFS
          Issue Type: Improvement
            Reporter: lei w


Remove redundant RPC requests for getFileLinkInfo in ClientNamenodeProtocolTranslatorPB. The original logic is as follows：
{code:java}
@Override
public HdfsFileStatus getFileLinkInfo(String src) throws IOException {
  GetFileLinkInfoRequestProto req = GetFileLinkInfoRequestProto.newBuilder()
      .setSrc(src).build();
  try {
    GetFileLinkInfoResponseProto result = rpcProxy.getFileLinkInfo(null, req);// First getFileLinkInfo RPC request
    return result.hasFs() ?
        PBHelperClient.convert(rpcProxy.getFileLinkInfo(null, req).getFs()) :// Repeated getFileLinkInfo RPC request
        null;
  } catch (ServiceException e) {
    throw ProtobufHelper.getRemoteException(e);
  }
}
{code}



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