Konstantin Orlov created IGNITE-20437:
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             Summary: Sql. Support system views in execution
                 Key: IGNITE-20437
                 URL: https://issues.apache.org/jira/browse/IGNITE-20437
             Project: Ignite
          Issue Type: Improvement
          Components: sql
            Reporter: Konstantin Orlov
            Assignee: Konstantin Orlov


After both IGNITE-20019 and IGNITE-20020 will be implemented, we can complete 
integration of system view to the SQL engine by implementing execution part of 
integration. Following parts of the SQL engine must be covered under this 
ticket:
* mapping of plans with system views to the actual topology
* initialisation of distributed query tree. That is, translation of a fragment 
containing scan over system view to a execution tree
* execution node, that will drain the cursor provided by system view



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