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Posted to issues@calcite.apache.org by "Julian Hyde (JIRA)" <ji...@apache.org> on 2017/05/25 19:03:04 UTC

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

    [ https://issues.apache.org/jira/browse/CALCITE-1048?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16025230#comment-16025230 ] 

Julian Hyde commented on CALCITE-1048:
--------------------------------------

Even with effective caching, the call stack to get metadata can get very deep. We should consider a breadth-first algorithm.

> 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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