clintropolis commented on pull request #11713:
URL: https://github.com/apache/druid/pull/11713#issuecomment-983369913


   > Yes, the cluster has be updated fully. 
   
   Are the types still incorrect in your cluster? The issue I mentioned I think 
would be temporary, though I guess it could take some time before  the issue 
corrects itself because it populates reactively, but I think could be resolve 
immediately by restarting the brokers
   
   > If the order of upgrading is overlord -> coordinator -> historical -> 
middle-manager -> broker -> router, can this compatibility problem be avoided
   
   I did a fair bit of compatibility testing around upgrade order so I believe 
so, though the bulk of it was before #11895 went in, which is the change that 
added a new field to the segment metadata query response to populate the types 
in `DruidSchema`.
   
   


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