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From "Kristian Waagan (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-4833) Prepare existing JUnit tests for running with automatic index statistics generation
Date Fri, 10 Dec 2010 16:47:01 GMT

     [ https://issues.apache.org/jira/browse/DERBY-4833?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kristian Waagan updated DERBY-4833:
-----------------------------------

    Issue & fix info: [Patch Available]

> Prepare existing JUnit tests for running with automatic index statistics generation
> -----------------------------------------------------------------------------------
>
>                 Key: DERBY-4833
>                 URL: https://issues.apache.org/jira/browse/DERBY-4833
>             Project: Derby
>          Issue Type: Task
>          Components: Test
>    Affects Versions: 10.7.1.1
>            Reporter: Kristian Waagan
>            Assignee: Kristian Waagan
>            Priority: Minor
>         Attachments: derby-4833-1a-orderbyandsortavoidancetest_adjustment.diff, derby-4833-2a-updatelocks_disable_autostats.diff
>
>
> During prototyping of a mechanism to create and update index statistics automatically
(see DERBY-4771) it turned out that some of the tests fail due to the presence of [improved]
index statistics.
> Where appropriate the tests should be adjusted to cope with this background activity,
and where not appropriate it should be noted such that the feature, when introduced, can be
disabled.
> As part of this effort I will introduce a utility class for dealing with index statistics
in tests. These will be used by some existing tests and also the new tests that will be written
for the new feature.
> At this point two tests requiring adjustments have been identified (OrderByAndSortAvoidance,
UpdateStatisticsTest), and one is under investigation (AutoIncrementTest). More may surface
as the work on the feature progress.

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