Add a new hook to run at the beginning and end of the Driver.run method
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Key: HIVE-2871
URL: https://issues.apache.org/jira/browse/HIVE-2871
Project: Hive
Issue Type: Improvement
Reporter: Kevin Wilfong
Assignee: Kevin Wilfong
Driver.run is the highest level method which all queries go through, whether
they come from Hive Server, the CLI, or any other entry. We also do not have
any hooks before the compilation method is called, and having hooks in
Driver.run would provide this. Having hooks in Driver.run will allow, for
example, being able to overwrite config values used throughout query
processing, including compilation, and at the other end, cleaning up any
resources/logging any final values just before returning to the user.
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