[jira] Commented: (HIVE-1131) Add column lineage information to the pre execution hooks

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

    [ https://issues.apache.org/jira/browse/HIVE-1131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12831303#action_12831303 ] 

Zheng Shao commented on HIVE-1131:
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1. LineageInfo and related classes (that are used in PreExecutionHook/PostExecutionHook) need to implement Serializable so that we can serialize out the whole execution plan (including the hooks).


> Add column lineage information to the pre execution hooks
> ---------------------------------------------------------
>
>                 Key: HIVE-1131
>                 URL: https://issues.apache.org/jira/browse/HIVE-1131
>             Project: Hadoop Hive
>          Issue Type: New Feature
>          Components: Query Processor
>            Reporter: Ashish Thusoo
>            Assignee: Ashish Thusoo
>         Attachments: HIVE-1131.patch
>
>
> We need a mechanism to pass the lineage information of the various columns of a table to a pre execution hook so that applications can use that for:
> - auditing
> - dependency checking
> and many other applications.
> The proposal is to expose this through a bunch of classes to the pre execution hook interface to the clients and put in the necessary transformation logic in the optimizer to generate this information.

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