ASSERTION FAILED with UNION --------------------------- Key: TEIID-2900 URL: https://issues.jboss.org/browse/TEIID-2900 Project: Teiid Issue Type: Bug Components: Query Engine Affects Versions: 8.7 Reporter: Tom Arnold Assignee: Steven Hawkins Labels: assertionfailedexception Fix For: 8.7 Attachments: TestTranslator.zip This is reproducible in Teiid 8.7 beta2 from the downloads page, and in 8.7 beta3 built from GIT master. foo has >1000 rows. bar has 28 rows. Playing with the limit, it's possible to get the query to work. {code} <model name="foo"> <source name="foo" translator-name="custom" connection-jndi-name="java:/FooDS"/> </model> <model name="bar"> <source name="bar" translator-name="custom" connection-jndi-name="java:/BarDS"/> </model> {code} {code:sql} select * from ( (select identifier from foo.items) union all (select identifier from bar.items) ) x order by identifier desc limit 1000; {code} {code} 11:15:32,992 DEBUG [org.teiid.COMMAND_LOG] (New I/O worker #1) Nqu3TY8Cd+7P START USER COMMAND: startTime=2014-03-18 11:15:32.992 requestID=Nqu3TY8Cd+7P.0 txID=null sessionID=Nqu3TY8Cd+7P applicationName=JDBCprincipal=user@teiid-security vdbName=Foo vdbVersion=1 sql=select * from ( (select identifier from foo.items) union all (select identifier from bar.items) ) x order by identifier desc limit 1000 11:15:33,106 DEBUG [org.teiid.COMMAND_LOG] (Worker1_QueryProcessorQueue1) Nqu3TY8Cd+7P START DATA SRC COMMAND: startTime=2014-03-18 11:15:33.106 requestID=Nqu3TY8Cd+7P.0 sourceCommandID=4 executionID=0 txID=null modelName=foo translatorName=foo sessionID=Nqu3TY8Cd+7P principal=user@teiid-security sql=SELECT foo.items.identifier FROM foo.items ORDER BY foo.items.identifier DESC LIMIT 1000 11:15:33,106 DEBUG [org.teiid.COMMAND_LOG] (Worker2_QueryProcessorQueue2) Nqu3TY8Cd+7P START DATA SRC COMMAND: startTime=2014-03-18 11:15:33.106 requestID=Nqu3TY8Cd+7P.0 sourceCommandID=6 executionID=1 txID=null modelName=bar translatorName=foo sessionID=Nqu3TY8Cd+7P principal=user@teiid-security sql=SELECT bar.items.identifier FROM bar.items ORDER BY bar.items.identifier DESC LIMIT 1000 11:15:33,154 DEBUG [org.teiid.COMMAND_LOG] (Worker0_QueryProcessorQueue3) Nqu3TY8Cd+7P END SRC COMMAND: endTime=2014-03-18 11:15:33.154 requestID=Nqu3TY8Cd+7P.0 sourceCommandID=6 executionID=1 txID=null modelName=bar translatorName=foo sessionID=Nqu3TY8Cd+7P principal=user@teiid-security finalRowCount=28 11:15:33,553 DEBUG [org.teiid.COMMAND_LOG] (Worker0_QueryProcessorQueue4) Nqu3TY8Cd+7P END SRC COMMAND: endTime=2014-03-18 11:15:33.553 requestID=Nqu3TY8Cd+7P.0 sourceCommandID=4 executionID=0 txID=null modelName=foo translatorName=foo sessionID=Nqu3TY8Cd+7P principal=user@teiid-security finalRowCount=1000 11:15:33,567 DEBUG [org.teiid.COMMAND_LOG] (Worker0_QueryProcessorQueue4) Nqu3TY8Cd+7P ERROR USER COMMAND: endTime=2014-03-18 11:15:33.567 requestID=Nqu3TY8Cd+7P.0 txID=null sessionID=Nqu3TY8Cd+7P principal=user@teiid-security vdbName=Foo vdbVersion=1 finalRowCount=null 11:15:33,568 ERROR [org.teiid.PROCESSOR] (Worker0_QueryProcessorQueue4) Nqu3TY8Cd+7P TEIID30019 Unexpected exception for request Nqu3TY8Cd+7P.0: java.lang.AssertionError: ASSERTION FAILED: expected reference to be not null at org.teiid.core.util.Assertion.failed(Assertion.java:73) [teiid-common-core-8.7.0.Beta2.jar:8.7.0.Beta2] at org.teiid.core.util.Assertion.isNotNull(Assertion.java:100) [teiid-common-core-8.7.0.Beta2.jar:8.7.0.Beta2] at org.teiid.core.util.Assertion.isNotNull(Assertion.java:92) [teiid-common-core-8.7.0.Beta2.jar:8.7.0.Beta2] at org.teiid.common.buffer.TupleBuffer.getBatch(TupleBuffer.java:287) [teiid-engine-8.7.0.Beta2.jar:8.7.0.Beta2] at org.teiid.common.buffer.TupleBuffer.truncateTo(TupleBuffer.java:425) [teiid-engine-8.7.0.Beta2.jar:8.7.0.Beta2] at org.teiid.query.processor.relational.SortNode.sortPhase(SortNode.java:117) [teiid-engine-8.7.0.Beta2.jar:8.7.0.Beta2] at org.teiid.query.processor.relational.SortNode.getBuffer(SortNode.java:205) [teiid-engine-8.7.0.Beta2.jar:8.7.0.Beta2] at org.teiid.query.processor.relational.LimitNode.getBuffer(LimitNode.java:211) [teiid-engine-8.7.0.Beta2.jar:8.7.0.Beta2] at org.teiid.query.processor.relational.RelationalPlan.getBuffer(RelationalPlan.java:250) [teiid-engine-8.7.0.Beta2.jar:8.7.0.Beta2] at org.teiid.query.processor.QueryProcessor.getBuffer(QueryProcessor.java:289) [teiid-engine-8.7.0.Beta2.jar:8.7.0.Beta2] at org.teiid.query.processor.BatchCollector.collectTuples(BatchCollector.java:149) [teiid-engine-8.7.0.Beta2.jar:8.7.0.Beta2] at org.teiid.query.processor.BatchCollector.collectTuples(BatchCollector.java:141) [teiid-engine-8.7.0.Beta2.jar:8.7.0.Beta2] at org.teiid.dqp.internal.process.RequestWorkItem.processMore(RequestWorkItem.java:435) [teiid-engine-8.7.0.Beta2.jar:8.7.0.Beta2] at org.teiid.dqp.internal.process.RequestWorkItem.process(RequestWorkItem.java:320) [teiid-engine-8.7.0.Beta2.jar:8.7.0.Beta2] at org.teiid.dqp.internal.process.AbstractWorkItem.run(AbstractWorkItem.java:51) [teiid-engine-8.7.0.Beta2.jar:8.7.0.Beta2] at org.teiid.dqp.internal.process.RequestWorkItem.run(RequestWorkItem.java:248) [teiid-engine-8.7.0.Beta2.jar:8.7.0.Beta2] at org.teiid.dqp.internal.process.DQPWorkContext.runInContext(DQPWorkContext.java:274) [teiid-engine-8.7.0.Beta2.jar:8.7.0.Beta2] at org.teiid.dqp.internal.process.ThreadReuseExecutor$RunnableWrapper.run(ThreadReuseExecutor.java:119) [teiid-engine-8.7.0.Beta2.jar:8.7.0.Beta2] at org.teiid.dqp.internal.process.ThreadReuseExecutor$3.run(ThreadReuseExecutor.java:214) [teiid-engine-8.7.0.Beta2.jar:8.7.0.Beta2] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) [rt.jar:1.7.0_02] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) [rt.jar:1.7.0_02] at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_02] {code}