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From "Rick Hillegas (Issue Comment Edited) (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Edited] (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 18:55:29 GMT

    [ https://issues.apache.org/jira/browse/DERBY-5448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13122152#comment-13122152
] 

Rick Hillegas edited comment on DERBY-5448 at 10/6/11 6:54 PM:
---------------------------------------------------------------

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.

This patch backs out the following commit:

DERBY-5307 1141651: This commit ported documentation of the derby.language.sequence.preallocator
property from 10.9 docs to 10.8 docs. Note that the property still has meaning for sequences
although the property would be less capable after backing out 1141645. 


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

                
      was (Author: rhillegas):
    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
>             Fix For: 10.8.2.1
>
>         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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