db-derby-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-6211) Make Optimizer trace logic pluggable.
Date Mon, 06 May 2013 11:46:16 GMT

    [ https://issues.apache.org/jira/browse/DERBY-6211?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13649673#comment-13649673
] 

Knut Anders Hatlen commented on DERBY-6211:
-------------------------------------------

After the latest changes, derbytools.jar includes many of the iapi classes that previously
were only included in derby.jar. In addition to increasing the size of derbytools.jar (from
245KB to 680KB in a sane build) it causes sealing violations in the nightly tests on some
platforms, for example here: http://download.java.net/javadesktop/derby/javadb-5576120-report/javadb-5576120-3641400-details.html
                
> Make Optimizer trace logic pluggable.
> -------------------------------------
>
>                 Key: DERBY-6211
>                 URL: https://issues.apache.org/jira/browse/DERBY-6211
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 10.11.0.0
>            Reporter: Rick Hillegas
>            Assignee: Rick Hillegas
>         Attachments: derby-6211-01-aa-createPlugin.diff, derby-6211-02-aa-cleanup.diff,
derby-6211-02-ab-cleanup.diff, derby-6211-03-aa-customTracer.diff
>
>
> Right now the trace logic in the optimizer is hard-coded to produce a stream of diagnostics.
It would be good to be able to plug alternative trace logic into the optimizer. This would
make the following possible:
> 1) Plug in trace logic which produces formats which are easier to study and which can
be analyzed mechanically. E.g., xml formatted output.
> 2) Plug in trace logic which can be used during unit testing to verify that the optimizer
has picked the right plan. Over time this might make it easier to migrate canon-based tests
to assertion-based tests.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message