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From "Carl Steinbach (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-1073) CREATE VIEW followup: track view dependency information in metastore
Date Wed, 25 Nov 2015 02:02:11 GMT

    [ https://issues.apache.org/jira/browse/HIVE-1073?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15025987#comment-15025987
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Carl Steinbach commented on HIVE-1073:
--------------------------------------

Hi [~freepeter], thanks for writing up these notes!

bq. To track the view dependency, I will add a new class MTableDependency (name TBD) which
contains srcTbl and dstTbl.

Since only views can have dependencies on other tables/views it probably makes sense to change
the name to MViewDependency, and replace srcTbl with srcView.

> CREATE VIEW followup:  track view dependency information in metastore
> ---------------------------------------------------------------------
>
>                 Key: HIVE-1073
>                 URL: https://issues.apache.org/jira/browse/HIVE-1073
>             Project: Hive
>          Issue Type: Improvement
>          Components: Metastore, Views
>    Affects Versions: 0.6.0
>            Reporter: John Sichi
>            Assignee: Wenlei Xie
>
> Add a generic mechanism for recording the fact that one object depends on another.  First
use case (to be implemented as part of this task) would be views depending on tables or other
views, but in the future we can also use this for views depending on persistent functions,
functions depending on other functions, etc.
> This involves metastore modeling, QL analysis for deriving and recording the dependencies
(Ashish says something may already be available from the lineage work), and CLI support for
browsing dependencies.



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