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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (DERBY-4549) NPE in JBitSet
Date Thu, 18 Feb 2010 10:37:27 GMT

     [ https://issues.apache.org/jira/browse/DERBY-4549?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Knut Anders Hatlen resolved DERBY-4549.
---------------------------------------

          Resolution: Fixed
       Fix Version/s: 10.6.0.0
    Issue & fix info:   (was: [Patch Available])

Thanks for looking at the patch, Bryan!
Committed revision 911315.

I think this fix is a candidate for back-porting to 10.5. Will do that in a couple of days
if it doesn't cause any problems in the nightly regression tests.

> NPE in JBitSet
> --------------
>
>                 Key: DERBY-4549
>                 URL: https://issues.apache.org/jira/browse/DERBY-4549
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.3.1.4, 10.5.3.0, 10.6.0.0
>            Reporter: Murat Knecht
>            Assignee: Knut Anders Hatlen
>             Fix For: 10.6.0.0
>
>         Attachments: d4549-1a.diff, preprocess.diff
>
>
> A NPE occurs at org.apache.derby.iapi.util.JBitSet.or().
> A NPE occured at the same location before: http://issues.apache.org/jira/browse/DERBY-1574
> The bug was confirmed by Bryan Pendleton to show in the HEAD as well: http://mail-archives.apache.org/mod_mbox/db-derby-user/201002.mbox/%3C4B79F74E.1000005@amberpoint.com%3E
> To reproduce:
> ----------------------
> CREATE TABLE ABC (ID int PRIMARY KEY NOT NULL);
> CREATE TABLE DEF (ID int PRIMARY KEY NOT NULL);
> SELECT * 
> FROM ABC t1
> WHERE (SELECT DISTINCT t2.ID FROM DEF t2) 
>         IN (SELECT t3.ID FROM DEF t3) 
> ----------------------
> Leads to 
> error message: 
> Error: DERBY SQL error: SQLCODE: -1, SQLSTATE: XJ001, SQLERRMC: java.lang.NullPointerExceptionXJ001.U
> SQLState:  XJ001
> ErrorCode: -1
> Stacktrace:
> java.lang.NullPointerException
> 	at org.apache.derby.iapi.util.JBitSet.or(Unknown Source)
> 	at org.apache.derby.impl.sql.compile.OptimizerImpl.<init>(Unknown Source)
> 	at org.apache.derby.impl.sql.compile.Level2OptimizerImpl.<init>(Unknown Source)
> 	at org.apache.derby.impl.sql.compile.Level2OptimizerFactoryImpl.getOptimizerImpl(Unknown
Source)
> 	at org.apache.derby.impl.sql.compile.OptimizerFactoryImpl.getOptimizer(Unknown Source)
> 	at org.apache.derby.impl.sql.compile.ResultSetNode.getOptimizer(Unknown Source)
> 	at org.apache.derby.impl.sql.compile.SelectNode.optimize(Unknown Source)
> 	at org.apache.derby.impl.sql.compile.SubqueryNode.optimize(Unknown Source)
> 	at org.apache.derby.impl.sql.compile.SubqueryList.optimize(Unknown Source)
> 	at org.apache.derby.impl.sql.compile.SelectNode.optimize(Unknown Source)
> 	at org.apache.derby.impl.sql.compile.DMLStatementNode.optimizeStatement(Unknown Source)
> 	at org.apache.derby.impl.sql.compile.CursorNode.optimizeStatement(Unknown Source)
> 	at org.apache.derby.impl.sql.GenericStatement.prepMinion(Unknown Source)
> 	at org.apache.derby.impl.sql.GenericStatement.prepare(Unknown Source)
> 	at org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext.prepareInternalStatement(Unknown
Source)
> 	at org.apache.derby.impl.jdbc.EmbedPreparedStatement.<init>(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedPreparedStatement20.<init>(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedPreparedStatement30.<init>(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedPreparedStatement40.<init>(Unknown Source)
> 	at org.apache.derby.jdbc.Driver40.newEmbedPreparedStatement(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedConnection.prepareStatement(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedConnection.prepareStatement(Unknown Source)
> 	at org.apache.derby.impl.drda.DRDAStatement.prepare(Unknown Source)
> 	at org.apache.derby.impl.drda.DRDAStatement.explicitPrepare(Unknown Source)
> 	at org.apache.derby.impl.drda.DRDAConnThread.parsePRPSQLSTT(Unknown Source)
> 	at org.apache.derby.impl.drda.DRDAConnThread.processCommands(Unknown Source)
> 	at org.apache.derby.impl.drda.DRDAConnThread.run(Unknown Source)
> Cleanup action completed

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