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From "Phabricator (Commented) (JIRA)" <>
Subject [jira] [Commented] (HIVE-2471) Add timestamp column to the partition stats table.
Date Fri, 16 Mar 2012 21:23:41 GMT


Phabricator commented on HIVE-2471:

njain has commented on the revision "HIVE-2471 [jira] Add timestamp column with index to the
partition stats table.".

  ql/src/java/org/apache/hadoop/hive/ql/stats/jdbc/ Let us discuss
offline - I am not sure I understood


> Add timestamp column to the partition stats table.
> --------------------------------------------------
>                 Key: HIVE-2471
>                 URL:
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Kevin Wilfong
>            Assignee: Kevin Wilfong
>         Attachments: HIVE-2471.1.patch.txt, HIVE-2471.D2367.1.patch, HIVE-2471.D2367.2.patch,
> Occasionally, when entries are added to the partition stats table the program is halted
before it can delete those entries, by an exception, keyboard interrupt, etc.  These build
up to the point where the table gets very large, and it hurts the performance of the update
statement which is often called.  In order to fix this, I am adding a column to the table
which is auto-populated with the current timestamp.  This will allow us to create scripts
that go through periodically and clean out old entries from the table.

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