[teiid-issues] [JBoss JIRA] Closed: (TEIID-1562) ArrayIndexOutOfBounds and ASSERTION FAILED in models with UNION

ArrayIndexOutOfBounds and ASSERTION FAILED in models with UNION --------------------------------------------------------------- Key: TEIID-1562 URL: https://issues.jboss.org/browse/TEIID-1562 Project: Teiid Issue Type: Bug Components: Query Engine Affects Versions: 7.3, 7.4 Environment: Teiid 7.3/7.4 beta2 deployed on JBoss AS 5.1, installed on Ubuntu Server 10.04 LTS. Three source models, two of which in MySQL 5.1.51 (on the same machine of JBoss), and one on SQLServer 2000 (on another machine). Reporter: Claudio Venturini Assignee: Steven Hawkins Labels: 7.4Beta3, group, union Fix For: 7.4 Attachments: VDB_test.zip I've three simple source models. Two of them (namely "support_phy" and "oasi_phy") are on MySQL, and one ("tricolore_phy") on SQL Server 2000. I also have three view models, one for each source model, named "support_log", "oasi_log" and "tricolore_log". Don't mind the names... Every model has only one table. Each of these view models reflects one of the source models. In addition I have a fourth view model, named "aop", which integrates the data from the other view models using a simple UNION ALL operation. In particular this view model is defined by the following query: {code:sql} SELECT TR_v.data AS data_fattura, TR_v.n_prog, TR_v.quantita FROM tricolore_log.misura124.tricolore.vendita_referenza AS TR_v UNION ALL SELECT OA_v.data AS data_fattura, OA_v.n_prog, OA_v.quantita FROM oasi_log.misura124.oasi.vendita_referenza AS OA_v {code} One problem is that if I execute the following query, against the integrated model: {code:sql} SELECT data_fattura, n_prog, quantita FROM aop.misura124.aop.vendita_referenza WHERE n_prog = 1 {code} I get a ArrayIndexOutOfBoundsException: {code} 2011-04-20 17:26:26,332 DEBUG [org.teiid.COMMAND_LOG] (New I/O server worker #1-1) START USER COMMAND: startTime=2011-04-20 17:26:26.332 requestID=8LzPNHldNJhu.2 txID=null sessionID=8LzPNHldNJhu applicationName=JDBC principal=admin@teiid-security vdbName=misura124 vdbVersion=1sql=SELECT data_fattura, n_prog, quantita FROM aop.misura124.aop.vendita_referenza where n_prog = 1 2011-04-20 17:26:26,373 DEBUG [org.teiid.COMMAND_LOG] (Worker163_QueryProcessorQueue7610) ERROR USER COMMAND: endTime=2011-04-20 17:26:26.373 requestID=8LzPNHldNJhu.2 txID=null sessionID=8LzPNHldNJhu principal=admin@teiid-security vdbName=misura124 vdbVersion=1 finalRowCount=null 2011-04-20 17:26:26,373 ERROR [org.teiid.PROCESSOR] (Worker163_QueryProcessorQueue7610) Unexpected exception for request 8LzPNHldNJhu.2 java.lang.ArrayIndexOutOfBoundsException {code} I've tried to swap the order of the SELECTs statements in the query as follows: {code:sql} SELECT OA_v.data AS data_fattura, OA_v.n_prog, OA_v.quantita FROM oasi_log.misura124.oasi.vendita_referenza AS OA_v UNION ALL SELECT TR_v.data AS data_fattura, TR_v.n_prog, TR_v.quantita FROM tricolore_log.misura124.tricolore.vendita_referenza AS TR_v {code} Surprisingly it works!! This was the first problem. While finding a solution to that problem, I found a second problem. The definition of the table in the "tricolore_log" model is as follows: {code:sql} SELECT TR_v.DataDocumento AS data, 1 AS n_prog, CAST(SUM(TR_v.NrPezzi) AS INTEGER) AS quantita FROM tricolore_phy.Tricolore.dbo.DISCO_Vendita_Referenza AS TR_v INNER JOIN support_log.mediator.referenza_op AS SUP_r ON TR_v.Cod_Dsc = SUP_r.codice WHERE SUP_r.codop = 1 GROUP BY TR_v.DataDocumento, COALESCE(NULLIF(RTRIM(LTRIM(TR_v.NumeroDocumento)), ''), 'N.D.') {code} The GROUP BY clause is a little bit complex, so I tried to simplify it by removing the COALESCE function, thereby maintaining in the clause only the TR_v.DataDocumento field. I've run the same query on the integrated schema, and the result is an ASSERTION FAILED error: {code} 2011-04-20 17:06:33,572 DEBUG [org.teiid.COMMAND_LOG] (New I/O server worker #1-2) START USER COMMAND: startTime=2011-04-20 17:06:33.571 requestID=iMaBNssX10Nx.0 txID=null sessionID=iMaBNssX10Nx applicationName=JDBC principal=admin@teiid-security vdbName=misura124 vdbVersion=1sql=SELECT data_fattura, n_prog, quantita FROM aop.misura124.aop.vendita_referenza where n_prog = 1 2011-04-20 17:06:33,586 DEBUG [org.teiid.COMMAND_LOG] (Worker158_QueryProcessorQueue7536) ERROR USER COMMAND: endTime=2011-04-20 17:06:33.586 requestID=iMaBNssX10Nx.0 txID=null sessionID=iMaBNssX10Nx principal=admin@teiid-security vdbName=misura124 vdbVersion=1 finalRowCount=null 2011-04-20 17:06:33,588 ERROR [org.teiid.PROCESSOR] (Worker158_QueryProcessorQueue7536) Unexpected exception for request iMaBNssX10Nx.0 java.lang.AssertionError: ASSERTION FAILED: expected reference to be not null at org.teiid.core.util.Assertion.failed(Assertion.java:73) at org.teiid.core.util.Assertion.isNotNull(Assertion.java:100) at org.teiid.core.util.Assertion.isNotNull(Assertion.java:92) at org.teiid.query.processor.relational.RelationalNode.getProjectionIndexes(RelationalNode.java:367) at org.teiid.query.processor.relational.JoinNode.initialize(JoinNode.java:129) at org.teiid.query.processor.relational.RelationalPlan.connectExternal(RelationalPlan.java:103) at org.teiid.query.processor.relational.RelationalPlan.connectExternal(RelationalPlan.java:108) at org.teiid.query.processor.relational.RelationalPlan.connectExternal(RelationalPlan.java:108) at org.teiid.query.processor.relational.RelationalPlan.connectExternal(RelationalPlan.java:108) at org.teiid.query.processor.relational.RelationalPlan.connectExternal(RelationalPlan.java:108) at org.teiid.query.processor.relational.RelationalPlan.initialize(RelationalPlan.java:98) at org.teiid.query.processor.QueryProcessor.init(QueryProcessor.java:175) at org.teiid.query.processor.QueryProcessor.nextBatchDirect(QueryProcessor.java:125) at org.teiid.query.processor.QueryProcessor.nextBatch(QueryProcessor.java:104) at org.teiid.query.processor.BatchCollector.collectTuples(BatchCollector.java:146) at org.teiid.dqp.internal.process.RequestWorkItem.processMore(RequestWorkItem.java:305) at org.teiid.dqp.internal.process.RequestWorkItem.process(RequestWorkItem.java:233) at org.teiid.dqp.internal.process.AbstractWorkItem.run(AbstractWorkItem.java:56) at org.teiid.dqp.internal.process.DQPWorkContext.runInContext(DQPWorkContext.java:197) at org.teiid.dqp.internal.process.ThreadReuseExecutor$RunnableWrapper.run(ThreadReuseExecutor.java:118) at org.teiid.dqp.internal.process.ThreadReuseExecutor$3.run(ThreadReuseExecutor.java:292) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662) {code} Worst of all, the clients seems to not recognize the error, and thus it continues to wait for a response which will never arrive. From the client point of view, the server seems to be in a infinite loop. In addition the query works either by completely removing the GROUP BY clause, or removing the INNER JOIN and the WHERE clauses. But these can not be considered as workarounds because they change the semantics of the model. I found the two bugs using Teiid 7.3 patched with https://issues.jboss.org/browse/TEIID-1458 and https://issues.jboss.org/browse/TEIID-1465, and then I upgraded to Teiid 7.4 beta2, which doesn't solve the problem.