zhangbutao commented on issue #12878:
URL: https://github.com/apache/iceberg/issues/12878#issuecomment-2837326376

   @wypoon Yes, IMO, Hive 4 is a big major version, which may have some 
incompatible changes compared with the previous version(Hive2&Hive3). Although 
personally I think we should do our best to ensure backward compatibility as 
much as possible, However, there are too many redundant and deprecated codes in 
Hive. These codes need to be cleaned up to ensure the sustainability of future 
code development. This is precisely what HIVE-26537 is doing.
   
   @deniskuzZ @dengzhhu653 Any other suggestion about this incompatible change?
   
   
   > On the other hand, IIUC, this means that the over-the-wire protocol 
(Thrift) compatibility is broken, which is why a Hive 2 client cannot be used 
with a Hive 4 HMS. Is this compatibility something Hive is meant to guarantee? 
[@zhangbutao](https://github.com/zhangbutao)
   
   


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