PaulAngus commented on pull request #212:
URL: 
https://github.com/apache/cloudstack-documentation/pull/212#issuecomment-829019918


   Can someone add a link to where this potential issue was reported please.
   
   I agree with Andrija, this is a scary message that basically says: upgrading 
may or may not trash your database, and that the Admin needs to check their 
schema, looking for a non-specific problem, and then apply a non-specific fix.
   
   If there _is_ an issue, it's our job to ensure that the MySQL upgrade 
statements work, not the end-users.  
   
   Worst case, we should check that the schema changes are applied correctly as 
we go (not a bad idea to do this as a standard procedure for all schema 
updates).  We can then retry with the alternate syntax, or just fail fast.
   
   
   


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