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From "Mamta A. Satoor (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DERBY-4115) Provide a way to drop statistics information
Date Wed, 25 Apr 2012 00:32:06 GMT

     [ https://issues.apache.org/jira/browse/DERBY-4115?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mamta A. Satoor updated DERBY-4115:
-----------------------------------

    Attachment: DERBY4115_patch2_diff.txt

I am attaching second incremental patch(DERBY4115_patch2_diff) which takes care of some of
the test failures(expected failures because of the addition of a new system procedure). I
am rerunning the junit suite to make sure there is no other test failing because of the new
stored procedure. I will also run derbyall to see if it has any problems. Thanks
                
> Provide a way to drop statistics information
> --------------------------------------------
>
>                 Key: DERBY-4115
>                 URL: https://issues.apache.org/jira/browse/DERBY-4115
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 10.6.1.0
>            Reporter: Kathey Marsden
>            Assignee: Mamta A. Satoor
>         Attachments: DERBY4115_patch1_diff.txt, DERBY4115_patch2_diff.txt
>
>
> Now that DERBY-269 has been resolved,  users can update statistics, but once they do,
they are committed to using and maintaining the statistics, even if it doesn't improve performance
or they have difficulty maintaining the statistics on a regular basis.  It would be good to
have a way to drop statistics information so that users could revert to the prior behavior
if needed.

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