acelyc111 commented on code in PR #1112:
URL: https://github.com/apache/incubator-pegasus/pull/1112#discussion_r948610419


##########
src/rdsn/src/common/backup.thrift:
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@@ -64,24 +64,28 @@ struct configuration_restore_request
     9:optional string   restore_path;
 }
 
+// meta -> replica
 struct backup_request

Review Comment:
   OK, thanks.
   I meant how to keep compatablity, if the meta servers are in new version, 
and the replica server are in old version, what will happen if we ask the 
cluster to do backup? Is it neccessary to add new rpc code for the new 
implemention.



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