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Posted to derby-dev@db.apache.org by "Knut Anders Hatlen (JIRA)" <ji...@apache.org> on 2013/01/10 10:38:12 UTC
[jira] [Commented] (DERBY-6038) Intermittent failure in
LangProcedureTest: cannot drop table because of open ResultSet
[ https://issues.apache.org/jira/browse/DERBY-6038?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13549477#comment-13549477 ]
Knut Anders Hatlen commented on DERBY-6038:
-------------------------------------------
It reproduces every time in my environment if I run the test with -XX:+DisableExplicitGC. That switch disables a workaround in GenericLanguageConnectionContext.verifyNoOpenResultSets() that runs garbage collection to give the ResultSet a last chance to get closed before raising the error. The workaround is not 100% reliable, since calling System.gc() and System.runFinalization() is just a suggestion to the JVM, according to the Java SE javadocs. That's probably why the test occasionally fails also when it's run without the switch.
> Intermittent failure in LangProcedureTest: cannot drop table because of open ResultSet
> --------------------------------------------------------------------------------------
>
> Key: DERBY-6038
> URL: https://issues.apache.org/jira/browse/DERBY-6038
> Project: Derby
> Issue Type: Bug
> Components: Test
> Affects Versions: 10.10.0.0
> Reporter: Knut Anders Hatlen
>
> Seen intermittently after LangProcedureTest was enabled:
> 1) testDynamicResultSets(org.apache.derbyTesting.functionTests.tests.lang.LangProcedureTest)java.sql.SQLException: Operation 'DROP TABLE' cannot be performed on object 'DELLATER3' because there is an open ResultSet dependent on that object.
> at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(SQLExceptionFactory40.java:98)
> at org.apache.derby.impl.jdbc.Util.generateCsSQLException(Util.java:256)
> at org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(TransactionResourceImpl.java:424)
> at org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(TransactionResourceImpl.java:353)
> at org.apache.derby.impl.jdbc.EmbedConnection.handleException(EmbedConnection.java:2400)
> at org.apache.derby.impl.jdbc.ConnectionChild.handleException(ConnectionChild.java:82)
> at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1334)
> at org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:630)
> at org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:559)
> at org.apache.derbyTesting.functionTests.tests.lang.LangProcedureTest.testDynamicResultSets(LangProcedureTest.java:976)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at org.apache.derbyTesting.junit.BaseTestCase.runBare(BaseTestCase.java:117)
> at org.apache.derbyTesting.junit.BaseJDBCTestCase.runBareOverridable(BaseJDBCTestCase.java:424)
> at org.apache.derbyTesting.junit.BaseJDBCTestCase.runBare(BaseJDBCTestCase.java:441)
> 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)
> 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: java.sql.SQLException: Operation 'DROP TABLE' cannot be performed on object 'DELLATER3' because there is an open ResultSet dependent on that object.
> at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(SQLExceptionFactory.java:42)
> at org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(SQLExceptionFactory40.java:122)
> at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(SQLExceptionFactory40.java:71)
> ... 47 more
> Caused by: ERROR X0X95: Operation 'DROP TABLE' cannot be performed on object 'DELLATER3' because there is an open ResultSet dependent on that object.
> at org.apache.derby.iapi.error.StandardException.newException(StandardException.java:295)
> at org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext.verifyNoOpenResultSets(GenericLanguageConnectionContext.java:2146)
> at org.apache.derby.impl.sql.GenericPreparedStatement.prepareToInvalidate(GenericPreparedStatement.java:778)
> at org.apache.derby.impl.sql.depend.BasicDependencyManager.coreInvalidateFor(BasicDependencyManager.java:437)
> at org.apache.derby.impl.sql.depend.BasicDependencyManager.invalidateFor(BasicDependencyManager.java:298)
> at org.apache.derby.impl.sql.execute.DropTableConstantAction.executeConstantAction(DropTableConstantAction.java:265)
> at org.apache.derby.impl.sql.execute.MiscResultSet.open(MiscResultSet.java:61)
> at org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(GenericPreparedStatement.java:452)
> at org.apache.derby.impl.sql.GenericPreparedStatement.execute(GenericPreparedStatement.java:333)
> at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1242)
> ... 41 more
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