[ http://issues.apache.org/jira/browse/DERBY-614?page=all ]
Bryan Pendleton updated DERBY-614:
----------------------------------
Attachment: svn-diff-2005-12-04.txt
svn-status-2005-12-04.txt
Here is an updated patch and updated SVN status incorporating Kathey's feedback:
- big.sql includes some simple SQL tests of the split code
- new method jira614 within prepStmt.java includes a focused test of precisely
the situation that raised the original bug.
- I tried to make the assertion in splitQRYDTA more descriptive of what it was
trying to catch
- I added some comments about the issues involved in splitting, and about
possible
alternate algorithms
both DerbyNet and DerbyNetClient pass with this patch, and the rest of derbyall
was uneventful, too.
> Execution failed because of a Distributed Protocol Error
> --------------------------------------------------------
>
> Key: DERBY-614
> URL: http://issues.apache.org/jira/browse/DERBY-614
> Project: Derby
> Type: Bug
> Components: Network Server
> Versions: 10.1.1.0
> Environment: Linux 2.4, Sun JDK 1.4.2_07, full SYSINFO will be attached.
> Reporter: Bryan Pendleton
> Attachments: clientSideTrace.txt, clientStack.txt,
> derby-614-with-tests.diff, derby-614.stat, derby-614.zip, derbyTrace.txt,
> derbynetclientmats_report.txt, query.txt, serverSideTrace.txt, spec.html,
> svn-diff-2005-12-04.txt, svn-status-2005-12-04.txt, sysinfo.derby
>
> I am intermittently receiving Distributed Protocol Error exceptions in my
> client code. Simultaneously,
> my derby.log is recording Distributed Protocol Error exceptions on the server
> side.
> I cannot reliably reproduce this problem.
> However, the problem always occurs in the same section of my application, so
> I can at least
> describe that section of my application. (I'll do so in an attachment).
> Here is the error I receive on the server side. Sometimes, the CODPNT is 2116
> and the
> Error Code Value is 1d, rather than 2114 and e.
> 2005-10-05 02:10:23.663 GMT Thread[DRDAConnThread_2,5,main] (DATABASE =
> BuildFar
> m), (DRDAID = GA0A0026.P7E6-4182154075488704215{136532}), Execution failed
> becau
> se of a Distributed Protocol Error: DRDA_Proto_SYNTAXRM; CODPNT arg = 2114;
> Er
> ror Code Value = e
> Execution failed because of a Distributed Protocol Error:
> DRDA_Proto_SYNTAXRM;
> CODPNT arg = 2114; Error Code Value = e
> 2005-10-05 02:10:23.663 GMT Thread[DRDAConnThread_2,5,main] (DATABASE =
> BuildFar
> m), (DRDAID = GA0A0026.P7E6-4182154075488704215{136532}), null
> null
> org.apache.derby.impl.drda.DRDAProtocolException
> at org.apache.derby.impl.drda.DRDAConnThread.throwSyntaxrm(Unknown
> Sourc
> e)
> at org.apache.derby.impl.drda.DRDAConnThread.missingCodePoint(Unknown
> So
> urce)
> at org.apache.derby.impl.drda.DRDAConnThread.parseCNTQRY(Unknown
> Source)
> at org.apache.derby.impl.drda.DRDAConnThread.splitQRYDTA(Unknown
> Source)
> at org.apache.derby.impl.drda.DRDAConnThread.writeFDODTA(Unknown
> Source)
> at org.apache.derby.impl.drda.DRDAConnThread.writeQRYDTA(Unknown
> Source)
> at org.apache.derby.impl.drda.DRDAConnThread.processCommands(Unknown
> Sou
> rce)
> at org.apache.derby.impl.drda.DRDAConnThread.run(Unknown Source)
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