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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Created: (DERBY-4330) NullPointerException or assert failure when re-executing PreparedStatement after lock timeout
Date Fri, 31 Jul 2009 18:10:15 GMT
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: 10.5.1.1, 10.4.2.0, 10.4.1.3, 10.3.3.0, 10.3.2.1, 10.3.1.4, 10.5.2.0,
10.6.0.0
            Reporter: Knut Anders Hatlen


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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