Knut Anders Hatlen created DERBY-6442:
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Summary: 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
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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