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https://issues.apache.org/jira/browse/DERBY-4245?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12720087#action_12720087
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Kristian Waagan commented on DERBY-4245:
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Code inspection shows that getting a BufferedInputStream in this case is
correct. It comes from StreamFileContainer.open, and the source is a file. The
merge sort (MergeSort.openSortScan) uses stream containers.
The default buffer size is 16 KB
(RawStoreFactory.STREAM_FILE_BUFFER_SIZE_DEFAULT).
> Sorting a table containing a CLOB fails after upgrade to 10.5
> -------------------------------------------------------------
>
> Key: DERBY-4245
> URL: https://issues.apache.org/jira/browse/DERBY-4245
> Project: Derby
> Issue Type: Bug
> Components: Store
> Affects Versions: 10.5.1.1
> Reporter: Knut Anders Hatlen
> Assignee: Kristian Waagan
> Fix For: 10.5.1.2, 10.6.0.0
>
> Attachments: derby-4245-0a-preview.diff, derby-4245-1a-test.diff,
> derby-4245-1b-test.diff, derby-4245-1c-test.diff,
> derby-4245-2a-sqlclob_fix.diff, derby-4245-3a-unread_bytes_fix.diff,
> MixedVersionClob.java
>
>
> When sorting a table containing a CLOB column in a database that has been
> soft-upgraded from 10.4.2.0 to 10.5.1.1, the query fails with a
> NullPointerException.
> Reported on derby-user:
> http://mail-archives.apache.org/mod_mbox/db-derby-user/200905.mbox/%[email protected]%3e
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