[teiid-issues] [JBoss JIRA] (TEIID-5446) Retrieving clob values from Exasol prints stacktrace to server log

[Andrej Šmigala (JIRA)]

Andrej Šmigala created TEIID-5446:
-------------------------------------

             Summary: Retrieving clob values from Exasol prints stacktrace to server log
                 Key: TEIID-5446
                 URL: https://issues.jboss.org/browse/TEIID-5446
             Project: Teiid
          Issue Type: Bug
          Components: JDBC Connector
    Affects Versions: 11.1, 8.12.15.6_4
            Reporter: Andrej Šmigala
            Assignee: Steven Hawkins


In Exasol, CLOB is [an alias|https://www.exasol.com/support/secure/attachment/49848/EXASOL_User_Manual-6.0.0-en.pdf] for VARCHAR. When querying a foreign table with a CLOB column defined as 

{code:sql}
ObjectValue clob OPTIONS (NATIVE_TYPE 'varchar(4000)', NAMEINSOURCE 'objectvalue')) 
{code}, 

an exception is logged in the server output for each row.

The query itself finishes successfully and the returned results are correct.


{noformat}
12:44:20,959 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr java.lang.Throwable
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at com.exasol.jdbc.Column.type_error(Column.java:26)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at com.exasol.jdbc.Column.getClob(Column.java:137)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at com.exasol.jdbc.EXAResultSet.getClob(EXAResultSet.java:686)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at org.jboss.jca.adapters.jdbc.WrappedResultSet.getClob(WrappedResultSet.java:1060)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at org.teiid.translator.jdbc.JDBCExecutionFactory.retrieveValue(JDBCExecutionFactory.java:1146)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at org.teiid.translator.jdbc.JDBCQueryExecution.next(JDBCQueryExecution.java:340)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at org.teiid.dqp.internal.datamgr.ConnectorWorkItem.handleBatch(ConnectorWorkItem.java:455)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at org.teiid.dqp.internal.datamgr.ConnectorWorkItem.more(ConnectorWorkItem.java:241)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at java.lang.reflect.Method.invoke(Method.java:498)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at org.teiid.dqp.internal.datamgr.ConnectorManager$1.invoke(ConnectorManager.java:229)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at com.sun.proxy.$Proxy36.more(Unknown Source)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at org.teiid.dqp.internal.process.DataTierTupleSource.getResults(DataTierTupleSource.java:305)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at org.teiid.dqp.internal.process.DataTierTupleSource$1.call(DataTierTupleSource.java:108)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at org.teiid.dqp.internal.process.DataTierTupleSource$1.call(DataTierTupleSource.java:104)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at org.teiid.dqp.internal.process.FutureWork.run(FutureWork.java:61)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at org.teiid.dqp.internal.process.DQPWorkContext.runInContext(DQPWorkContext.java:277)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at org.teiid.dqp.internal.process.ThreadReuseExecutor$RunnableWrapper.run(ThreadReuseExecutor.java:115)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at org.teiid.dqp.internal.process.ThreadReuseExecutor$3.run(ThreadReuseExecutor.java:206)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
12:44:20,960 ERROR [stderr] (Worker6_QueryProcessorQueue42) axblivLlwkmr        at java.lang.Thread.run(Thread.java:748)
{noformat}



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