[jira] Commented: (HIVE-140) Event Based Infrastructure for Syntax Trees in the compiler

["Zheng Shao (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12654708#action_12654708 ] 

Zheng Shao commented on HIVE-140:
---------------------------------

+1

> Event Based Infrastructure for Syntax Trees in the compiler
> -----------------------------------------------------------
>
>                 Key: HIVE-140
>                 URL: https://issues.apache.org/jira/browse/HIVE-140
>             Project: Hadoop Hive
>          Issue Type: Improvement
>          Components: Query Processor
>            Reporter: Ashish Thusoo
>            Assignee: Ashish Thusoo
>         Attachments: patch-140.txt
>
>
> In order to refactor SemanticAnalyzer into a bunch of different components, we need to move more modular mechanisms of doing semantic analysis. One of the missing pieces here is the event based infrastructure for analyzing ASTs in the Semantic Analyzer. We will first use this infrastructure for lineage tools and then migrate the rest of the Semantic Analyzer to this infrastructure over time.

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