[DERBY-4198] When using the FOR UPDATE OF clause with SUR (Scroll-insensive updatable result sets), the updateRow() method crashes

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 10.2.1.6, 10.2.2.0, 10.3.1.4, 10.3.2.1, 10.3.3.0, 10.4.1.3, 10.4.2.0, 10.5.1.1
• Fix Version/s: 10.5.2.0, 10.6.1.0
• Component/s: JDBC, Network Client, SQL
• Urgency: Normal
• Bug behavior facts: Crash
• Assignee: Dag H. Wanvik
• Reporter: Tiago R. Espinha
• Created: 29/Apr/09 15:00
• Updated: 21/Jan/11 17:52
• Resolved: 16/Jun/09 11:29

Description

This problem occurs on both Client/Server and Embedded.

With the Embedded driver, the JVM crashes with the following error:
------------------------------------8<-----------------------------------
1) testReproduction(org.apache.derbyTesting.functionTests.tests.store.ReproHoldCursorBug)org.apache.derby.shared.common.sanity.AssertFailure: ASSERT FAILED statementContext is not expected to equal statementContexts[0]
at org.apache.derby.shared.common.sanity.SanityManager.ASSERT(SanityManager.java:120)
at org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext.popStatementContext(GenericLanguageConnectionContext.java:2286)
at org.apache.derby.impl.jdbc.EmbedResultSet.updateRow(EmbedResultSet.java:3740)
at org.apache.derbyTesting.functionTests.tests.store.ReproHoldCursorBug.testReproduction(ReproHoldCursorBug.java:71)
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:105)
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)
-----------------------------------8<--------------------------------------------
(It shows a stack trace after this, but I'm attaching the result folders since those are more thorough.)[1]

On the client driver, the JVM does not crash but it also errors out:
1) testReproduction(org.apache.derbyTesting.functionTests.tests.store.ReproHoldCursorBug)java.sql.SQLException: DERBY SQL error: SQLCODE: -1, SQLSTATE: XJ001, SQLERRMC: java.lang.NullPointerExceptionXJ001.U
(more detail on the log files)[2]

The error does not show as long as the "OF DATA" isn't specified. It also won't show if the whole FOR UPDATE clause is omitted.

I would also like some comments and advice on how to proceed on converting holdCursorJDBC30.sql as it is affected by this problem. The original test does an update on a cursor with the "FOR UPDATE OF DATA" clause, and this isn't working on the Java version of the test. Do I go around it by removing the FOR UPDATE clause or should I wait for this bug to get fixed?

Attachments:
[1] - ErrorOutput_Embedded.tar.gz - Error output files of the Embedded run
[2] - ErrorOutput_Client.tar.gz - Error output files of the Client/Server run
[3] - ReproHoldCursorBug.java - The reproduction of the errors

Issue Links

• blocks: DERBY-3839 Convert "org.apache.derbyTesting.functionTests.tests.store.holdCursorJDBC30.sql" to junit.