[teiid-issues] [JBoss JIRA] (TEIID-5146) UNION of two similar JOIN queries fails with ASSERTION FAILED error if it contains table function of procedural call with arguments

[Steven Hawkins (JIRA)]

     [ https://issues.jboss.org/browse/TEIID-5146?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Hawkins resolved TEIID-5146.
-----------------------------------
    Fix Version/s: 10.1
                   10.0.1
       Resolution: Done


Fixed two issues with lateral joins.  The first is that correlated reference detection did not work when using a nested explicit cross join where no rows were actually used at the root level join.  The other issue causing the exception here was that we should keep reusing a shared query under a lateral join indefinitely as we don't know ahead of time how many readers there will be.

> 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: 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.



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