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From "Rick Hillegas (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DERBY-5448) In the 10.8 branch, back out the concurrency improvements introduced by using SequenceUpdaters to allocate identity values.
Date Thu, 06 Oct 2011 18:49:29 GMT

     [ https://issues.apache.org/jira/browse/DERBY-5448?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rick Hillegas updated DERBY-5448:
---------------------------------

    Attachment: derby-5448-02-aa-backoutDocsChanges.diff

Attaching derby-5448-02-aa-backoutDocsChanges.diff. This patch removes the 10.8 documentation
of the derby.language.sequence.preallocator property. Committed to the 10.8 docs branch at
subversion revision 1179759.

Touches the following files:

M       src/ref/rrefsqlj37836.dita
M       src/ref/rrefsqljcreatesequence.dita
D       src/ref/rrefproperpreallocator.dita
M       src/ref/crefproper22250.dita
M       src/ref/refderby.ditamap

                
> In the 10.8 branch, back out the concurrency improvements introduced by using SequenceUpdaters
to allocate identity values.
> ---------------------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-5448
>                 URL: https://issues.apache.org/jira/browse/DERBY-5448
>             Project: Derby
>          Issue Type: Bug
>          Components: Documentation, SQL
>    Affects Versions: 10.8.2.1
>            Reporter: Rick Hillegas
>         Attachments: derby-5448-01-aa-backoutConcurrencyChanges.diff, derby-5448-02-aa-backoutDocsChanges.diff
>
>
> New errors were seen while running NsTest against the 10.8.2 release candidates. These
errors are recorded as DERBY-5430 and DERBY-5422. The first error is a deadlock which occurs
when inserting into the main table of the test. The second error is a problem clearing the
identity cache. These errors have caused people to lose confidence in the concurrency improvements
introduced by DERBY-4437. We should back the DERBY-4437 changes out of the 10.8 branch and
use the trunk to continue debugging the problems disclosed by NsTest.

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