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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (DERBY-6442) NPE when loading optional tools from multiple threads
Date Thu, 06 Mar 2014 08:06:42 GMT

     [ https://issues.apache.org/jira/browse/DERBY-6442?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Knut Anders Hatlen closed DERBY-6442.
-------------------------------------

    Resolution: Duplicate

This bug does not reproduce after DERBY-6496. Closing as duplicate.

> NPE when loading optional tools from multiple threads
> -----------------------------------------------------
>
>                 Key: DERBY-6442
>                 URL: https://issues.apache.org/jira/browse/DERBY-6442
>             Project: Derby
>          Issue Type: Bug
>          Components: Tools
>    Affects Versions: 10.10.1.1
>            Reporter: Knut Anders Hatlen
>         Attachments: ForeignViewMT.java
>
>
> When I try to load the foreignViews tool from two threads simultaneously, I see a NullPointerException
in Java5SystemProcedures.SYSCS_REGISTER_TOOL.
> java.lang.NullPointerException
>         at org.apache.derby.catalog.Java5SystemProcedures.SYSCS_REGISTER_TOOL(Java5SystemProcedures.java:98)
>         at org.apache.derby.exe.ac504bc13bx0143x44f5x9203x000006cb3ed80.g0(Unknown Source)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>         at java.lang.reflect.Method.invoke(Method.java:606)
>         at org.apache.derby.impl.services.reflect.ReflectMethod.invoke(ReflectMethod.java:46)
>         at org.apache.derby.impl.sql.execute.CallStatementResultSet.open(CallStatementResultSet.java:75)
>         at org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(GenericPreparedStatement.java:439)
>         at org.apache.derby.impl.sql.GenericPreparedStatement.execute(GenericPreparedStatement.java:320)
>         at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1337)
>         at org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeStatement(EmbedPreparedStatement.java:1709)
>         at org.apache.derby.impl.jdbc.EmbedPreparedStatement.execute(EmbedPreparedStatement.java:1394)
>         at ForeignViewMT$Worker.run(ForeignViewMT.java:31)



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