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https://issues.apache.org/jira/browse/DERBY-3970?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kristian Waagan updated DERBY-3970:
-----------------------------------
Fix Version/s: 10.4.2.1
Backported fix 1a to 10.4 with revision 725286.
Regression tests ran cleanly on the 10.4 branch.
> PositionedStoreStream doesn't initialize itself properly
> --------------------------------------------------------
>
> Key: DERBY-3970
> URL: https://issues.apache.org/jira/browse/DERBY-3970
> Project: Derby
> Issue Type: Bug
> Components: JDBC
> Affects Versions: 10.3.3.0, 10.4.2.0, 10.5.0.0
> Reporter: Kristian Waagan
> Assignee: Kristian Waagan
> Priority: Minor
> Fix For: 10.4.2.1, 10.5.0.0
>
> Attachments: derby-3970-1a-PositionedStoreStream_init.diff.txt
>
>
> When a PositionedStoreStream is created on top of a stream from store, it
> must properly initialize itself.
> Proper initialization consists of initializing and resetting the stream to
> make sure the states of the streams are in sync.
> A case of out of sync stream states was detected in a test where the Clob
> reference wasn't kept, but a new Clob object was created for each operation,
> i.e:
> rs.getClob(1).length();
> rs.getClob(1).getSubString(...);
> A symptom of out of sync stream states is EOFException on a valid request.
> I don't think the access style above is supposed to work, but the proper
> initialization should be performed anyway.
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