Add column lineage information to the pre execution hooks
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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
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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