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https://issues.apache.org/jira/browse/HIVE-3610?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13485843#comment-13485843
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Namit Jain commented on HIVE-3610:
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Why do you need this ?
Isn't the same information available through hooks today, or am I missing
something ?
> Add a command "Explain dependency ..."
> --------------------------------------
>
> Key: HIVE-3610
> URL: https://issues.apache.org/jira/browse/HIVE-3610
> Project: Hive
> Issue Type: New Feature
> Components: Query Processor
> Affects Versions: 0.9.0
> Reporter: Sambavi Muthukrishnan
> Assignee: Sambavi Muthukrishnan
> Priority: Minor
> Attachments: explain_dependency.1.patch, explain_dependency.2.patch
>
>
> Add a new command "EXPLAIN DEPENDENCY".
> Any query can be passed to EXPLAIN DEPENDENCY as with EXPLAIN
> (FORMATTED/EXTENDED). The output of this command will be JSON that provides
> the list of tables and partitions that the query depends on.
> One possible use case is to determine the set of tables/views that are used
> by a view, and the set of partitions that are used by a given query on that
> view. This will allow a view to be replicated from one Hive instance to
> another, since we can determine the set of objects that need to be replicated
> for replication of the view to be successful.
> Example output:
> {"input_tables":[{"tablename": "default@test_sambavi_v2", "tabletype":
> "EXTERNAL_TABLE"}, {"tablename": "default@test_sambavi_v1", "tabletype":
> "TABLE"}], "input
> partitions":["default@srcpart@ds=2008-04-08/hr=11","default@srcpart@ds=2008-04-08/hr=12"]}
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