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From "Dag H. Wanvik (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4330) NullPointerException or assert failure when re-executing PreparedStatement after lock timeout
Date Thu, 20 Aug 2009 19:21:14 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12745583#action_12745583
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Dag H. Wanvik commented on DERBY-4330:
--------------------------------------

Probably not. I probably had forgotten to sanitize my 10.5 sandbox :(
Thanks for catching that, Knut, I'll have a look.


> NullPointerException or assert failure when re-executing PreparedStatement after lock
timeout
> ---------------------------------------------------------------------------------------------
>
>                 Key: DERBY-4330
>                 URL: https://issues.apache.org/jira/browse/DERBY-4330
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.3.1.4, 10.3.2.1, 10.3.3.0, 10.4.1.3, 10.4.2.0, 10.5.1.1, 10.5.2.0,
10.6.0.0
>            Reporter: Knut Anders Hatlen
>            Assignee: Dag H. Wanvik
>             Fix For: 10.3.4.0, 10.4.3.0, 10.5.3.1, 10.6.0.0
>
>         Attachments: derby-4330a.diff, derby-4330b.diff, derby-4330b.stat, derby-4330c.diff,
derby-4330c.stat, repro-intersect.sql, repro-union.sql, repro.sql
>
>
> I came across a query that failed with a NullPointerException (insane jars) or an assert
failure (sane jars) when a PreparedStatement was re-executed after a lock timeout. I'm able
to reproduce this on 10.3.1.4 and later. 10.2.2.0 and earlier don't fail. Another fallout
from DERBY-827? I've also seen other manifestations of the problem, apparently depending on
the actual rows in the tables, including "No current connection" and "The heap container with
container id Container(0, 1120) is closed".
> Stack trace for the assert failure:
> org.apache.derby.shared.common.sanity.AssertFailure: ASSERT FAILED JoinResultSet already
open
>         at org.apache.derby.shared.common.sanity.SanityManager.ASSERT(SanityManager.java:120)
>         at org.apache.derby.impl.sql.execute.JoinResultSet.openCore(JoinResultSet.java:144)
>         at org.apache.derby.impl.sql.execute.ProjectRestrictResultSet.openCore(ProjectRestrictResultSet.java:169)
>         at org.apache.derby.impl.sql.execute.SortResultSet.openCore(SortResultSet.java:248)
>         at org.apache.derby.impl.sql.execute.ProjectRestrictResultSet.openCore(ProjectRestrictResultSet.java:169)
>         at org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl.open(BasicNoPutResultSetImpl.java:248)
>         at org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(GenericPreparedStatement.java:416)
>         at org.apache.derby.impl.sql.GenericPreparedStatement.execute(GenericPreparedStatement.java:297)
>         at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1235)
>         at org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeStatement(EmbedPreparedStatement.java:1675)
>         at org.apache.derby.impl.jdbc.EmbedPreparedStatement.execute(EmbedPreparedStatement.java:1330)

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