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https://issues.apache.org/jira/browse/DERBY-3907?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kristian Waagan updated DERBY-3907:
-----------------------------------
Attachment: derby-3907-2c-header_write_preparation.diff
Updated a new version of patch 2c. The only change is in
ReaderToUTF8Stream.checkSufficientData, where I had used the wrong header
holder to determine if an EOF marker was to be written to the stream.
With the exception of one failure in UTF8UtilTest, the regression tests ran
successfully with JDK 1.6 on Solaris.
In rerunning with the updated patch.
> Save useful length information for Clobs in store
> -------------------------------------------------
>
> Key: DERBY-3907
> URL: https://issues.apache.org/jira/browse/DERBY-3907
> Project: Derby
> Issue Type: Improvement
> Components: JDBC, Store
> Affects Versions: 10.5.0.0
> Reporter: Kristian Waagan
> Assignee: Kristian Waagan
> Attachments: derby-3907-1a-alternative_approach.diff,
> derby-3907-2b-header_write_preparation.diff,
> derby-3907-2b-header_write_preparation.diff,
> derby-3907-2b-header_write_preparation.stat,
> derby-3907-2c-header_write_preparation-PREVIEW.diff,
> derby-3907-2c-header_write_preparation-PREVIEW.stat,
> derby-3907-2c-header_write_preparation.diff,
> derby-3907-2c-header_write_preparation.diff,
> derby-3907-2c-header_write_preparation.stat,
> derby-3907-3a-readertoutf8stream_cleanup.diff,
> derby-3907-3a-readertoutf8stream_cleanup.diff,
> derby-3907-3a-readertoutf8stream_cleanup.stat,
> derby-3907-3b-readertoutf8stream_cleanup.diff
>
>
> The store should save useful length information for Clobs. This allows the
> length to be found without decoding the whole data stream.
> The following thread raised the issue on what information to store, and also
> contains some background information:
> http://www.nabble.com/Storing-length-information-for-CLOB-on-disk-tp19197535p19197535.html
> The information to store, and the exact format of it, is still to be
> discussed/determined.
> Currently two bytes are set aside for length information, which is inadequate.
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