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https://issues.apache.org/jira/browse/HIVE-2871?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Phabricator updated HIVE-2871:
------------------------------

    Attachment: HIVE-2871.D2331.1.patch

kevinwilfong requested code review of "HIVE-2871 [jira] Add a new hook to run 
at the beginning and end of the Driver.run method".
Reviewers: JIRA

  https://issues.apache.org/jira/browse/HIVE-2871

  Added a new hook which runs at the beginning and end of the Driver.run 
method.  It has pre and post execution methods.  I do not provide any 
implementations as part of this diff.

  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.

TEST PLAN
  EMPTY

REVISION DETAIL
  https://reviews.facebook.net/D2331

AFFECTED FILES
  common/src/java/org/apache/hadoop/hive/conf/HiveConf.java
  ql/src/test/results/clientpositive/hook_order.q.out
  ql/src/test/org/apache/hadoop/hive/ql/hooks/VerifyHooksRunInOrder.java
  ql/src/test/queries/clientpositive/hook_order.q
  ql/src/java/org/apache/hadoop/hive/ql/HiveDriverRunHook.java
  ql/src/java/org/apache/hadoop/hive/ql/HiveDriverRunHookContextImpl.java
  ql/src/java/org/apache/hadoop/hive/ql/HiveDriverRunHookContext.java
  ql/src/java/org/apache/hadoop/hive/ql/Driver.java

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> Add a new hook to run at the beginning and end of the Driver.run method
> -----------------------------------------------------------------------
>
>                 Key: HIVE-2871
>                 URL: https://issues.apache.org/jira/browse/HIVE-2871
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Kevin Wilfong
>            Assignee: Kevin Wilfong
>         Attachments: HIVE-2871.D2331.1.patch
>
>
> 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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