Osisoft Translator - NPE when using ORDER BY -------------------------------------------- Key: TEIID-5118 URL: https://issues.jboss.org/browse/TEIID-5118 Project: Teiid Issue Type: Bug Components: JDBC Connector Affects Versions: 8.12.x-6.4 Reporter: Andrej Šmigala Assignee: Ramesh Reddy Priority: Critical Fix For: 10.0 Attachments: osisoft-pi-vdb.xml Any query with an ORDER BY clause run against Osisoft PI datasource fails with a NullPointerException Stack trace: {noformat} 10:17:09,235 ERROR [org.teiid.CONNECTOR] (Worker3_QueryProcessorQueue17) Connector worker process failed for atomic-request=mcBkcBzOiieD.5.0.5: java.lang.NullPointerException at org.teiid.translator.jdbc.pi.PISQLConversionVisitor.visit(PISQLConversionVisitor.java:157) [translator-jdbc-8.12.11.6_4.jar:8.12.11.6_4] at org.teiid.language.ColumnReference.acceptVisitor(ColumnReference.java:72) [teiid-api-8.12.11.6_4-redhat-64-6.jar:8.12.11.6_4-redhat-64-6] at org.teiid.language.visitor.AbstractLanguageVisitor.visitNode(AbstractLanguageVisitor.java:51) [teiid-api-8.12.11.6_4-redhat-64-6.jar:8.12.11.6_4-redhat-64-6] at org.teiid.language.visitor.SQLStringVisitor.append(SQLStringVisitor.java:91) [teiid-api-8.12.11.6_4-redhat-64-6.jar:8.12.11.6_4-redhat-64-6] at org.teiid.translator.jdbc.SQLConversionVisitor.append(SQLConversionVisitor.java:130) [translator-jdbc-8.12.11.6_4.jar:8.12.11.6_4] at org.teiid.language.visitor.SQLStringVisitor.visit(SQLStringVisitor.java:737) [teiid-api-8.12.11.6_4-redhat-64-6.jar:8.12.11.6_4-redhat-64-6] at org.teiid.language.SortSpecification.acceptVisitor(SortSpecification.java:53) [teiid-api-8.12.11.6_4-redhat-64-6.jar:8.12.11.6_4-redhat-64-6] at org.teiid.language.visitor.AbstractLanguageVisitor.visitNode(AbstractLanguageVisitor.java:51) [teiid-api-8.12.11.6_4-redhat-64-6.jar:8.12.11.6_4-redhat-64-6] at org.teiid.language.visitor.SQLStringVisitor.append(SQLStringVisitor.java:91) [teiid-api-8.12.11.6_4-redhat-64-6.jar:8.12.11.6_4-redhat-64-6] at org.teiid.translator.jdbc.SQLConversionVisitor.append(SQLConversionVisitor.java:130) [translator-jdbc-8.12.11.6_4.jar:8.12.11.6_4] at org.teiid.language.visitor.SQLStringVisitor.append(SQLStringVisitor.java:102) [teiid-api-8.12.11.6_4-redhat-64-6.jar:8.12.11.6_4-redhat-64-6] at org.teiid.language.visitor.SQLStringVisitor.visit(SQLStringVisitor.java:733) [teiid-api-8.12.11.6_4-redhat-64-6.jar:8.12.11.6_4-redhat-64-6] at org.teiid.language.OrderBy.acceptVisitor(OrderBy.java:45) [teiid-api-8.12.11.6_4-redhat-64-6.jar:8.12.11.6_4-redhat-64-6] at org.teiid.language.visitor.AbstractLanguageVisitor.visitNode(AbstractLanguageVisitor.java:51) [teiid-api-8.12.11.6_4-redhat-64-6.jar:8.12.11.6_4-redhat-64-6] at org.teiid.language.visitor.SQLStringVisitor.append(SQLStringVisitor.java:91) [teiid-api-8.12.11.6_4-redhat-64-6.jar:8.12.11.6_4-redhat-64-6] at org.teiid.translator.jdbc.SQLConversionVisitor.append(SQLConversionVisitor.java:130) [translator-jdbc-8.12.11.6_4.jar:8.12.11.6_4] at org.teiid.language.visitor.SQLStringVisitor.visit(SQLStringVisitor.java:790) [teiid-api-8.12.11.6_4-redhat-64-6.jar:8.12.11.6_4-redhat-64-6] at org.teiid.language.Select.acceptVisitor(Select.java:110) [teiid-api-8.12.11.6_4-redhat-64-6.jar:8.12.11.6_4-redhat-64-6] at org.teiid.language.visitor.AbstractLanguageVisitor.visitNode(AbstractLanguageVisitor.java:51) [teiid-api-8.12.11.6_4-redhat-64-6.jar:8.12.11.6_4-redhat-64-6] at org.teiid.language.visitor.SQLStringVisitor.append(SQLStringVisitor.java:91) [teiid-api-8.12.11.6_4-redhat-64-6.jar:8.12.11.6_4-redhat-64-6] at org.teiid.translator.jdbc.SQLConversionVisitor.append(SQLConversionVisitor.java:130) [translator-jdbc-8.12.11.6_4.jar:8.12.11.6_4] at org.teiid.translator.jdbc.TranslatedCommand.translateCommand(TranslatedCommand.java:76) [translator-jdbc-8.12.11.6_4.jar:8.12.11.6_4] at org.teiid.translator.jdbc.JDBCBaseExecution.translateCommand(JDBCBaseExecution.java:120) [translator-jdbc-8.12.11.6_4.jar:8.12.11.6_4] at org.teiid.translator.jdbc.JDBCQueryExecution.execute(JDBCQueryExecution.java:114) [translator-jdbc-8.12.11.6_4.jar:8.12.11.6_4] at org.teiid.dqp.internal.datamgr.ConnectorWorkItem.execute(ConnectorWorkItem.java:363) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.8.0_141] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) [rt.jar:1.8.0_141] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_141] at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_141] at org.teiid.dqp.internal.datamgr.ConnectorManager$1.invoke(ConnectorManager.java:211) at com.sun.proxy.$Proxy79.execute(Unknown Source) at org.teiid.dqp.internal.process.DataTierTupleSource.getResults(DataTierTupleSource.java:306) at org.teiid.dqp.internal.process.DataTierTupleSource$1.call(DataTierTupleSource.java:112) at org.teiid.dqp.internal.process.DataTierTupleSource$1.call(DataTierTupleSource.java:108) at java.util.concurrent.FutureTask.run(FutureTask.java:266) [rt.jar:1.8.0_141] at org.teiid.dqp.internal.process.FutureWork.run(FutureWork.java:65) at org.teiid.dqp.internal.process.DQPWorkContext.runInContext(DQPWorkContext.java:280) at org.teiid.dqp.internal.process.ThreadReuseExecutor$RunnableWrapper.run(ThreadReuseExecutor.java:119) at org.teiid.dqp.internal.process.ThreadReuseExecutor$3.run(ThreadReuseExecutor.java:210) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [rt.jar:1.8.0_141] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [rt.jar:1.8.0_141] at java.lang.Thread.run(Thread.java:748) [rt.jar:1.8.0_141] {noformat} I tried remote debugging the server process and it appears that when running query such as {code:sql} SELECT FloatNum FROM BQT1.SmallA ORDER BY FloatNum ASC {code} the PISQLConversionVisitor.visit(ColumnReference obj) is called twice, the first time the ColumnReference object has value "g_0.FloatNum" and all fields set, the second time the object has only name set to "c_2" and nothing else (table, metadata object etc).