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From "Myrna van Lunteren (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-6305) Tuning Derby information on optimizer overrides needs improvement
Date Tue, 21 Oct 2014 14:34:34 GMT

    [ https://issues.apache.org/jira/browse/DERBY-6305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14178455#comment-14178455
] 

Myrna van Lunteren commented on DERBY-6305:
-------------------------------------------

The other overrides were never documented for cloudscape, and I can only assume they were
put in by various original developers to help test certain parts of the optimizer.
I think this issue should be closed and any further improvements to functionality/documentation
should be handled separately.

> Tuning Derby information on optimizer overrides needs improvement
> -----------------------------------------------------------------
>
>                 Key: DERBY-6305
>                 URL: https://issues.apache.org/jira/browse/DERBY-6305
>             Project: Derby
>          Issue Type: Bug
>          Components: Documentation
>    Affects Versions: 10.10.1.1
>            Reporter: Kim Haase
>         Attachments: DERBY-6305.diff, DerbyDashProperties.html, ctundepthoptover.html
>
>
> The topic "Optimizer overrides" in the Tuning Derby manual talks about using the "--
DERBY-PROPERTIES" clause to specify overrides but doesn't include a link to the topic later
in the manual, "Overriding the default optimizer behavior", that explains how to use the clause.
This undoubtedly results in user confusion.
> The first topic is http://db.apache.org/derby/docs/10.10/tuning/ctundepthoptover.html;
the second is http://db.apache.org/derby/docs/10.10/tuning/ctunoptimzoverride.html.
> I'll add the link, and I welcome additional suggestions on how to improve these topics.



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