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https://issues.apache.org/jira/browse/DERBY-3823?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13118914#comment-13118914
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Dag H. Wanvik commented on DERBY-3823:
--------------------------------------
I have managed to reproduce this (the DERBY-5435 variant which is marked as a
duplicate of this) four of times in three days. On the server side in all four
cases I see the error printed from DRDA_Conn_Thread: "agentError("Why am I
getting another SQLException?")" when an exception (NPE?) is thrown from the
call to writeSQLDARD (line 1026). Now, some instrumentation.. ;-)
> NullPointerException in stress.multi test
> -----------------------------------------
>
> Key: DERBY-3823
> URL: https://issues.apache.org/jira/browse/DERBY-3823
> Project: Derby
> Issue Type: Bug
> Components: Network Server
> Affects Versions: 10.3.3.1, 10.7.1.1
> Reporter: Kathey Marsden
> Labels: derby_triage10_5_2
> Attachments: derby.log
>
>
> I saw the following NPE in stress.multi running on 10.3 with derbyclient.
> java.lang.NullPointerException
> at
> org.apache.derby.impl.jdbc.EmbedPreparedStatement.getMetaData(Unknown
> Source)
> at org.apache.derby.impl.drda.DRDAConnThread.writeSQLDARD(Unknown
> Source
> )
> at org.apache.derby.impl.drda.DRDAConnThread.processCommands(Unknown
> Sou
> rce)
> at org.apache.derby.impl.drda.DRDAConnThread.run(Unknown Source)
> Cleanup action completed
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