[DERBY-5675] on IBM 1.7 20 failures , 190 errors mostly of the variety Java exception: 'sun.misc.Unsafe incompatible with java.util.concurrent.ConcurrentHashMap$HashEntry: java.lang.ClassCastException'.

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Cannot Reproduce
• Affects Version/s: 10.9.1.0
• Component/s: JDBC

Environment

java version "1.7.0"
Java(TM) SE Runtime Environment (build pwi3270-20110906_01)
IBM J9 VM (build 2.6, JRE 1.7.0 Windows 7 x86-32 20110810_88604 (JIT enabled, AOT enabled)
J9VM - R26_Java726_GA_20110810_1208_B88592
JIT - r11_20110810_20466
GC - R26_Java726_GA_20110810_1208_B88592
J9CL - 20110810_88604)
JCL - 20110809_01 based on Oracle 7b147

• Issue & fix info: High Value Fix
• Bug behavior facts: Regression Test Failure
• Assignee: Unassigned
• Reporter: Katherine Marsden
• Created: 28/Mar/12 17:32
• Updated: 15/Nov/13 08:15
• Resolved: 20/Jun/12 23:48

Description

On 3/26/2012, build 1305705 on trunk the IBM 1.7 Windows started failing with either a hang or
20 failures 190 errors most of which seem to be starting or related to this error:
Java exception: 'sun.misc.Unsafe incompatible with java.util.concurrent.ConcurrentHashMap$HashEntry: java.lang.ClassCastException'.

The detail didn't make it to the apache pushout at:
http://people.apache.org/~myrnavl/derby_test_results/main/windows/testSummary-1305705.html
I will attach the output from the failure case.

There were 190 errors:
1) testAutoCommitTrueBatch(org.apache.derbyTesting.functionTests.tests.jdbcapi.BatchUpdateTest)java.sql.SQLException: Java exception: 'sun.misc.Unsafe incompatible with java.util.concurrent.ConcurrentHashMap$HashEntry: java.lang.ClassCastException'.
at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.Util.javaException(Unknown Source)
at org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.handleException(Unknown Source)
at org.apache.derby.impl.jdbc.ConnectionChild.handleException(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedResultSet.closeOnTransactionError(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedResultSet.movePosition(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedResultSet.next(Unknown Source)
at org.apache.derbyTesting.junit.BaseJDBCTestCase.assertEscapedTableRowCount(BaseJDBCTestCase.java:912)
at org.apache.derbyTesting.junit.BaseJDBCTestCase.assertTableRowCount(BaseJDBCTestCase.java:894)
at org.apache.derbyTesting.functionTests.tests.jdbcapi.BatchUpdateTest.testAutoCommitTrueBatch(BatchUpdateTest.java:373)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:88)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55)
at org.apache.derbyTesting.junit.BaseTestCase.runBare(BaseTestCase.java:113)
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 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$1.protect(TestSetup.java:21)
at junit.extensions.TestSetup.run(TestSetup.java:25)
Caused by: java.sql.SQLException: Java exception: 'sun.misc.Unsafe incompatible with java.util.concurrent.ConcurrentHashMap$HashEntry: java.lang.ClassCastException'.
at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(Unknown Source)
... 66 more
Caused by: java.lang.ClassCastException: sun.misc.Unsafe incompatible with java.util.concurrent.ConcurrentHashMap$HashEntry
at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:937)
at org.apache.derby.impl.services.locks.ConcurrentLockSet.zeroDurationLockObject(Unknown Source)
at org.apache.derby.impl.services.locks.AbstractPool.zeroDurationlockObject(Unknown Source)
at org.apache.derby.impl.services.locks.ConcurrentPool.zeroDurationlockObject(Unknown Source)
at org.apache.derby.impl.store.raw.xact.RowLocking2nohold.lockRecordForRead(Unknown Source)
at org.apache.derby.impl.store.access.conglomerate.OpenConglomerate.lockPositionForRead(Unknown Source)
at org.apache.derby.impl.store.access.conglomerate.GenericScanController.fetchRows(Unknown Source)
at org.apache.derby.impl.store.access.heap.HeapScan.fetchNextGroup(Unknown Source)
at org.apache.derby.impl.sql.execute.BulkTableScanResultSet.reloadArray(Unknown Source)
at org.apache.derby.impl.sql.execute.BulkTableScanResultSet.getNextRowCore(Unknown Source)
at org.apache.derby.impl.sql.execute.ProjectRestrictResultSet.getNextRowCore(Unknown Source)
at org.apache.derby.impl.sql.execute.ScalarAggregateResultSet.getRowFromResultSet(Unknown Source)
at org.apache.derby.impl.sql.execute.ScalarAggregateResultSet.getNextRowCore(Unknown Source)
at org.apache.derby.impl.sql.execute.ProjectRestrictResultSet.getNextRowCore(Unknown Source)
at org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl.getNextRow(Unknown Source)
... 58 more