Roman Kondakov created IGNITE-8841:
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             Summary: MVCC TX: Read transactions remap when coordinator fails.
                 Key: IGNITE-8841
                 URL: https://issues.apache.org/jira/browse/IGNITE-8841
             Project: Ignite
          Issue Type: Improvement
          Components: sql
            Reporter: Roman Kondakov


At the moment all read transactions are forcibly rolled back during coordinator 
change. It would be nice to remap it somehow until they locked a topology. For 
example, it is possible to obtain a new "write" mvcc version from the new 
coordinator and use this version for all further writes while using "old" 
version for reads. In this case we need to change visibility rules a little: 
"old" version should see "own" updates made by "new" "write" version.



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