[jira] [Created] (CALCITE-1048) Make metadata more robust

[Julian Hyde (JIRA)]

Julian Hyde created CALCITE-1048:
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             Summary: Make metadata more robust
                 Key: CALCITE-1048
                 URL: https://issues.apache.org/jira/browse/CALCITE-1048
             Project: Calcite
          Issue Type: Bug
            Reporter: Julian Hyde
            Assignee: Julian Hyde


Following CALCITE-794, make metadata more robust and performant, so we can 
safely derive metadata from a large RelNode graph.



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