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From "Kathey Marsden (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-3170) Connecting through network server after engine has been stopped causes NullPointerException on the server side
Date Mon, 06 Jul 2009 15:37:14 GMT

     [ https://issues.apache.org/jira/browse/DERBY-3170?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kathey Marsden updated DERBY-3170:
----------------------------------

      Issue & fix info: [High Value Fix, Repro attached]
               Urgency: Normal
    Bug behavior facts: [Embedded/Client difference]

Triaged for 10.5.2 and set Normal urgency. We should be able to reconnect after shutdown.
It is not clear from the comments if it is necessary to bounce the server to get a new connection.
 If so this should probably marked Urgent for 10.6


> Connecting through network server after engine has been stopped causes NullPointerException
on the server side
> --------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-3170
>                 URL: https://issues.apache.org/jira/browse/DERBY-3170
>             Project: Derby
>          Issue Type: Bug
>          Components: Network Server
>    Affects Versions: 10.4.1.3
>         Environment: Solaris 10 x86, Sun JDK 1.6.
> svn  revision 590939 (trunk).
>            Reporter: Vemund Østgaard
>
> While working on a port for a test that has to reset system properties, I discovered
this problem. The test setup starts a networkserver in the same JVM as the test is running
in, then stops the Derby engine and tries to connect to the database through the client driver
and network server. This causes the following exception returned to the application:
> 1) testRepro(org.apache.derbyTesting.functionTests.tests.lang.ReproTest)java.sql.SQLFeatureNotSupportedException:
The DDM object 0x1232 is not supported.  The connection has been terminated.
>         at org.apache.derby.client.am.SQLExceptionFactory40.getSQLException(Unknown Source)
>         at org.apache.derby.client.am.SqlException.getSQLException(Unknown Source)
>         at org.apache.derby.jdbc.ClientDriver.connect(Unknown Source)
>         at java.sql.DriverManager.getConnection(DriverManager.java:582)
>         at java.sql.DriverManager.getConnection(DriverManager.java:185)
>         at org.apache.derbyTesting.junit.DriverManagerConnector.openConnection(DriverManagerConnector.java:76)
>         at org.apache.derbyTesting.junit.DriverManagerConnector.openConnection(DriverManagerConnector.java:43)
>         at org.apache.derbyTesting.junit.TestConfiguration.openDefaultConnection(TestConfiguration.java:1030)
>         at org.apache.derbyTesting.junit.BaseJDBCTestCase.openDefaultConnection(BaseJDBCTestCase.java:366)
>         at org.apache.derbyTesting.junit.BaseJDBCTestCase.getConnection(BaseJDBCTestCase.java:102)
>         at org.apache.derbyTesting.functionTests.tests.lang.ReproTest.testRepro(ReproTest.java:48)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at org.apache.derbyTesting.junit.BaseTestCase.runBare(BaseTestCase.java:95)
>         at junit.extensions.TestDecorator.basicRun(TestDecorator.java:24)
>         at junit.extensions.TestSetup$1.protect(TestSetup.java:21)
>         at junit.extensions.TestSetup.run(TestSetup.java:25)
>         at org.apache.derbyTesting.junit.BaseTestSetup.run(BaseTestSetup.java:57)
>         at junit.extensions.TestDecorator.basicRun(TestDecorator.java:24)
>         at junit.extensions.TestSetup$1.protect(TestSetup.java:21)
>         at junit.extensions.TestSetup.run(TestSetup.java:25)
> Caused by: org.apache.derby.client.am.DisconnectException: The DDM object 0x1232 is not
supported.  The connection has been terminated.
>         at org.apache.derby.client.net.NetConnectionReply.doObjnsprmSemantics(Unknown
Source)
>         at org.apache.derby.client.net.NetConnectionReply.parseCommonError(Unknown Source)
>         at org.apache.derby.client.net.NetConnectionReply.parseSecurityCheckError(Unknown
Source)
>         at org.apache.derby.client.net.NetConnectionReply.parseSECCHKreply(Unknown Source)
>         at org.apache.derby.client.net.NetConnectionReply.readSecurityCheck(Unknown Source)
>         at org.apache.derby.client.net.NetConnection.readSecurityCheckAndAccessRdb(Unknown
Source)
>         at org.apache.derby.client.net.NetConnection.flowSecurityCheckAndAccessRdb(Unknown
Source)
>         at org.apache.derby.client.net.NetConnection.flowUSRIDPWDconnect(Unknown Source)
>         at org.apache.derby.client.net.NetConnection.flowConnect(Unknown Source)
>         at org.apache.derby.client.net.NetConnection.<init>(Unknown Source)
>         at org.apache.derby.client.net.NetConnection40.<init>(Unknown Source)
>         at org.apache.derby.client.net.ClientJDBCObjectFactoryImpl40.newNetConnection(Unknown
Source)
>         ... 32 more
> On the server side I see a NullPointerException:
> Apache Derby Network Server - 10.4.0.0 alpha - (590618M) started and ready to accept
connections on port 1527 at 2007-11-01 08:38:37.605 GMT
> null
> java.lang.NullPointerException
>         at org.apache.derby.impl.drda.DRDAConnThread.isAuthenticationException(Unknown
Source)
>         at org.apache.derby.impl.drda.DRDAConnThread.getConnFromDatabaseName(Unknown
Source)
>         at org.apache.derby.impl.drda.DRDAConnThread.verifyUserIdPassword(Unknown Source)
>         at org.apache.derby.impl.drda.DRDAConnThread.parseSECCHK(Unknown Source)
>         at org.apache.derby.impl.drda.DRDAConnThread.parseDRDAConnection(Unknown Source)
>         at org.apache.derby.impl.drda.DRDAConnThread.processCommands(Unknown Source)
>         at org.apache.derby.impl.drda.DRDAConnThread.run(Unknown Source)
> Execution failed because of Permanent Agent Error: SVRCOD = 40; RDBNAM = wombat; diagnostic
msg = null
> org.apache.derby.impl.drda.DRDAProtocolException: Execution failed because of Permanent
Agent Error: SVRCOD = 40; RDBNAM = wombat; diagnostic msg = null
>         at org.apache.derby.impl.drda.DRDAProtocolException.newAgentError(Unknown Source)
>         at org.apache.derby.impl.drda.DRDAConnThread.sendUnexpectedException(Unknown
Source)
>         at org.apache.derby.impl.drda.DRDAConnThread.handleException(Unknown Source)
>         at org.apache.derby.impl.drda.DRDAConnThread.run(Unknown Source)
> null
> java.lang.NullPointerException
>         at org.apache.derby.impl.drda.DRDAConnThread.isAuthenticationException(Unknown
Source)
>         at org.apache.derby.impl.drda.DRDAConnThread.getConnFromDatabaseName(Unknown
Source)
>         at org.apache.derby.impl.drda.DRDAConnThread.verifyUserIdPassword(Unknown Source)
>         at org.apache.derby.impl.drda.DRDAConnThread.parseSECCHK(Unknown Source)
>         at org.apache.derby.impl.drda.DRDAConnThread.parseDRDAConnection(Unknown Source)
>         at org.apache.derby.impl.drda.DRDAConnThread.processCommands(Unknown Source)
>         at org.apache.derby.impl.drda.DRDAConnThread.run(Unknown Source)
> Apache Derby Network Server - 10.4.0.0 alpha - (590618M) shutdown at 2007-11-01 08:38:38.318
GMT
> The class below is a test for the JUnit framework that reproduces the problem.
> /*
>  
>    Derby - Class org.apache.derbyTesting.functionTests.tests.lang.logStream
>  
>    Licensed to the Apache Software Foundation (ASF) under one or more
>    contributor license agreements.  See the NOTICE file distributed with
>    this work for additional information regarding copyright ownership.
>    The ASF licenses this file to You under the Apache License, Version 2.0
>    (the "License"); you may not use this file except in compliance with
>    the License.  You may obtain a copy of the License at
>  
>       http://www.apache.org/licenses/LICENSE-2.0
>  
>    Unless required by applicable law or agreed to in writing, software
>    distributed under the License is distributed on an "AS IS" BASIS,
>    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
>    See the License for the specific language governing permissions and
>    limitations under the License.
>  
>  */
> package org.apache.derbyTesting.functionTests.tests.lang;
> import java.sql.SQLException;
> import junit.framework.Test;
> import org.apache.derbyTesting.junit.BaseJDBCTestCase;
> import org.apache.derbyTesting.junit.TestConfiguration;
> /**
>  * Bug repro.
>  */
> public class ReproTest extends BaseJDBCTestCase {
>     public ReproTest(String name) {
>         super(name);
>     }
>     
>     public static Test suite() {
>         return TestConfiguration.clientServerDecorator(
>               new ReproTest("testRepro"));
>     }
>     
>     /**
>      * repro
>      */
>     public void testRepro() throws SQLException {
>         getTestConfiguration().shutdownEngine();
>         getConnection();
>     }
>     
> }

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