You are viewing a plain text version of this content. The canonical link for it is here.
Posted to derby-dev@db.apache.org by "Knut Anders Hatlen (JIRA)" <ji...@apache.org> on 2011/03/14 13:07:29 UTC
[jira] Assigned: (DERBY-3980) Conflicting select then update with
REPEATABLE_READ gives lock timeout instead of deadlock
[ https://issues.apache.org/jira/browse/DERBY-3980?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Knut Anders Hatlen reassigned DERBY-3980:
-----------------------------------------
Assignee: Knut Anders Hatlen
> Conflicting select then update with REPEATABLE_READ gives lock timeout instead of deadlock
> ------------------------------------------------------------------------------------------
>
> Key: DERBY-3980
> URL: https://issues.apache.org/jira/browse/DERBY-3980
> Project: Derby
> Issue Type: Bug
> Components: Services
> Affects Versions: 10.1.3.1, 10.2.2.0, 10.3.3.0, 10.4.2.0, 10.5.1.1
> Reporter: Kathey Marsden
> Assignee: Knut Anders Hatlen
> Labels: derby_triage10_5_2
> Attachments: LiveLockTest_diff.txt, LiveLockTest_with_Deadlock_look_diff.txt, LockTimeoutWithInserts.java, TryTimeout.java, TryTimeout2.java, TryTimeout2.out.10_1.deadlock, TryTimeout2.out.10_1.deadlock, TryTimeout2.out.10_1.locktimeout, TryTimeout2.out.10_1.locktimeout, derby-3980_javadoc_and_test_diff.txt, derby.log, derby.log.10_1, javacore.20081209.092827.9800.txt
>
>
> The attached program TryTimeout.java should detect a deadlock but instead throws a lock timeout exception. The program has two threads that attempt:
>
> threadConnection.setAutoCommit(false);
> /* set isolation level to repeatable read */
> threadConnection.setTransactionIsolation(Connection.TRANSACTION_REPEATABLE_READ);
>
> ResultSet rs = stmt.executeQuery("select * from t where i = 456");
> while (rs.next());
> stmt.executeUpdate("update t set i = 456 where i = 456");
> threadConnection.commit();
> This gives SQLState 40001 (deadlock) with DB2 but a lock timeout with Derby.
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira