UNION of two similar JOIN queries fails with ASSERTION FAILED error if it contains table function of procedural call with arguments ----------------------------------------------------------------------------------------------------------------------------------- Key: TEIID-5146 URL: https://issues.jboss.org/browse/TEIID-5146 Project: Teiid Issue Type: Bug Components: Query Engine Affects Versions: 9.3.4 Reporter: El Fuego Assignee: Steven Hawkins Fix For: 9.3.5, 10.1, 10.0.1 UNION of two similar JOINs containing table function of procedural call with arguments, like: {code:sql}SELECT d.col_t2 FROM "ds.test_t1", table(CALL views.pr0("arg1" => col_t1)) x JOIN "ds.test_t2" d ON true -- UNION -- SELECT d.col_t2 FROM "ds.test_t1", table(CALL views.pr0("arg1" => col_t1)) x JOIN "ds.test_t2" d ON true{code} fails with error: {code}2017-11-11 16:16:57,158 ERROR [org.teiid.PROCESSOR] (Worker2_QueryProcessorQueue23) wbDLp863MJn9 TEIID30019 Unexpected exception for request wbDLp863MJn9.7: 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.common.buffer.TupleBuffer.getBatch(TupleBuffer.java:287) at org.teiid.dqp.internal.process.TupleSourceCache$CopyOnReadTupleSource.nextTuple(TupleSourceCache.java:103) at org.teiid.query.processor.relational.AccessNode.nextBatchDirect(AccessNode.java:394) at org.teiid.query.processor.relational.RelationalNode.nextBatch(RelationalNode.java:281) at org.teiid.query.processor.BatchCollector.collectTuples(BatchCollector.java:164) at org.teiid.query.processor.relational.SourceState.prefetch(SourceState.java:211) at org.teiid.query.processor.relational.SourceState.rowCountLE(SourceState.java:158) at org.teiid.query.processor.relational.JoinNode.nextBatchDirect(JoinNode.java:227) at org.teiid.query.processor.relational.RelationalNode.nextBatch(RelationalNode.java:281) at org.teiid.query.processor.relational.LimitNode.nextBatchDirect(LimitNode.java:102) at org.teiid.query.processor.relational.RelationalNode.nextBatch(RelationalNode.java:281) at org.teiid.query.processor.BatchIterator.finalRow(BatchIterator.java:69) at org.teiid.common.buffer.AbstractTupleSource.getCurrentTuple(AbstractTupleSource.java:70) at org.teiid.query.processor.BatchIterator.getCurrentTuple(BatchIterator.java:84) at org.teiid.common.buffer.AbstractTupleSource.hasNext(AbstractTupleSource.java:92) at org.teiid.query.processor.relational.NestedTableJoinStrategy.process(NestedTableJoinStrategy.java:119) at org.teiid.query.processor.relational.JoinNode.nextBatchDirect(JoinNode.java:235) at org.teiid.query.processor.relational.RelationalNode.nextBatch(RelationalNode.java:281) at org.teiid.query.processor.relational.LimitNode.nextBatchDirect(LimitNode.java:102) at org.teiid.query.processor.relational.RelationalNode.nextBatch(RelationalNode.java:281) at org.teiid.query.processor.relational.ProjectNode.nextBatchDirect(ProjectNode.java:150) at org.teiid.query.processor.relational.RelationalNode.nextBatch(RelationalNode.java:281) at org.teiid.query.processor.relational.UnionAllNode.nextBatchDirect(UnionAllNode.java:147) at org.teiid.query.processor.relational.RelationalNode.nextBatch(RelationalNode.java:281) at org.teiid.query.processor.relational.LimitNode.nextBatchDirect(LimitNode.java:102) at org.teiid.query.processor.relational.RelationalNode.nextBatch(RelationalNode.java:281) at org.teiid.query.processor.relational.RelationalPlan.nextBatch(RelationalPlan.java:145) at org.teiid.query.processor.QueryProcessor.nextBatchDirect(QueryProcessor.java:152) at org.teiid.query.processor.QueryProcessor.nextBatch(QueryProcessor.java:115) at org.teiid.query.processor.BatchCollector.collectTuples(BatchCollector.java:164) at org.teiid.query.processor.BatchCollector.collectTuples(BatchCollector.java:146) at org.teiid.dqp.internal.process.RequestWorkItem.processMore(RequestWorkItem.java:479) at org.teiid.dqp.internal.process.RequestWorkItem.process(RequestWorkItem.java:349) at org.teiid.dqp.internal.process.AbstractWorkItem.run(AbstractWorkItem.java:51) at org.teiid.dqp.internal.process.RequestWorkItem.run(RequestWorkItem.java:275) at org.teiid.dqp.internal.process.DQPWorkContext.runInContext(DQPWorkContext.java:284) at org.teiid.dqp.internal.process.ThreadReuseExecutor$RunnableWrapper.run(ThreadReuseExecutor.java:119) at org.teiid.dqp.internal.process.ThreadReuseExecutor$3.run(ThreadReuseExecutor.java:210) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745){code} even if procedure doesn't use that argument at all.