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Posted to dev@atlas.apache.org by "Jeffrey Hagelberg (JIRA)" <ji...@apache.org> on 2017/01/19 21:30:26 UTC

[jira] [Commented] (ATLAS-1386) Avoid unnecessary type lookups during query parsing

    [ https://issues.apache.org/jira/browse/ATLAS-1386?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15830643#comment-15830643 ] 

Jeffrey Hagelberg commented on ATLAS-1386:
------------------------------------------

Changes committed.

> Avoid unnecessary type lookups during query parsing
> ---------------------------------------------------
>
>                 Key: ATLAS-1386
>                 URL: https://issues.apache.org/jira/browse/ATLAS-1386
>             Project: Atlas
>          Issue Type: Improvement
>          Components:  atlas-core
>    Affects Versions: trunk
>            Reporter: David Kantor
>            Assignee: Jeffrey Hagelberg
>         Attachments: rb55436.patch
>
>
> During query parsing, there are unnecessary types lookups happening. For example, in the DSL query hive_table where name = \"bar-999\" select name, name is parsed into an identifier, and it was doing a type lookup to see if a trait or class called 'name' exists. In cases like this, the operands are fields, not types, and so a type lookup is not necessary and arguably incorrect. 



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