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Type: Bug
Resolution: Done
Priority: Blocker
Fix Version/s: 10.0, 9.2.5, 9.3.2
Affects Version/s: 9.3, 9.3.1
Component/s: Query Engine
Labels:
None

Steps to Reproduce:
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1. In MySQL create the test_a table by the following script:

CREATE TABLE `test`.`test_a` ( `a` int(11) DEFAULT NULL, `b` int(11) DEFAULT NULL ) ENGINE=InnoDB DEFAULT CHARSET=utf8; INSERT INTO `test`.`test_a` (`a`,`b`) VALUES (1,1); INSERT INTO `test`.`test_a` (`a`,`b`) VALUES (1,2); INSERT INTO `test`.`test_a` (`a`,`b`) VALUES (2,1); INSERT INTO `test`.`test_a` (`a`,`b`) VALUES (2,2); INSERT INTO `test`.`test_a` (`a`,`b`) VALUES (3,2); INSERT INTO `test`.`test_a` (`a`,`b`) VALUES (3,10);

2. Add MySQL database configuration in standalone-teiid.xml:

<datasource jndi-name="java:/test" pool-name="test" enabled="true" use-java-context="true"> <connection-url>jdbc:mysql://localhost:3306/test?zeroDateTimeBehavior=convertToNull</connection-url> <driver>mysql</driver> <new-connection-sql>set SESSION sql_mode = 'ANSI'</new-connection-sql> <pool> <min-pool-size>2</min-pool-size> <max-pool-size>70</max-pool-size> </pool> <security> <user-name>root</user-name> <password>xxxxxx</password> </security> <validation> <valid-connection-checker class-name="org.jboss.jca.adapters.jdbc.extensions.mysql.MySQLValidConnectionChecker"/> <exception-sorter class-name="org.jboss.jca.adapters.jdbc.extensions.mysql.MySQLExceptionSorter"/> </validation> <timeout> <blocking-timeout-millis>120000</blocking-timeout-millis> <idle-timeout-minutes>5</idle-timeout-minutes> </timeout> </datasource>

3. Add in test-vdb.xml java:/test_pg configured in previous step as datasource:

<model name="test"> <property name="importer.useFullSchemaName" value="false"/> <property name="importer.tableTypes" value="TABLE,VIEW"/> <property name="importer.importIndexes" value="false"/> <property name="importer.importKeys" value="false"/> <source name="test" translator-name="mylobs" connection-jndi-name="java:/test"/> </model>

using "myLobs" as following:

<translator name="mylobs" type="mysql5"> <property name="CopyLobs" value="true" /> <property name="SupportsNativeQueries" value="true"/> </translator>

4. run the following query several times in a row:

with CTE1 as ( select a1 from ( -->> with CTE11 as (select a1 from ( WITH alias as (SELECT 1 as a), alias1 as (select alias.a as alias, AAA.a as alias1, AAA.b as a from alias join test.test_a AAA on alias.a!=AAA.a or alias.a!=AAA.a), alias2 as (with alias as (select alias.a as alias, AAA.a as alias1, AAA.b as a from alias join test.test_a AAA on alias.a!=AAA.a or alias.a!=AAA.a) select * from alias), alias3 as (with alias as (select alias.a as alias, AAA.a as alias1, AAA.a from alias join alias2 AAA on alias.a!=AAA.a or alias.a!=AAA.a) select * from alias) SELECT AAA.alias1 as a1 FROM alias join alias1 as AAA on alias.a=AAA.a or alias.a!=AAA.a join alias2 on AAA.a=alias2.a or AAA.a!=alias.a left join alias3 on alias3.a=alias2.a or alias3.a!=alias2.a ) tv2) --<< select a1 from CTE11 ) as SUBQ1), CTE2 as ( select a1 from ( -->> with CTE21 as (select a1 from ( WITH alias as (SELECT 1 as a), alias1 as (select alias.a as alias, AAA.a as alias1, AAA.b as a from alias join test.test_a AAA on alias.a!=AAA.a or alias.a!=AAA.a), alias2 as (with alias as (select alias.a as alias, AAA.a as alias1, AAA.b as a from alias join test.test_a AAA on alias.a!=AAA.a or alias.a!=AAA.a) select * from alias), alias3 as (with alias as (select alias.a as alias, AAA.a as alias1, AAA.a from alias join alias2 AAA on alias.a!=AAA.a or alias.a!=AAA.a) select * from alias) SELECT AAA.alias1 as a1 FROM alias join alias1 as AAA on alias.a=AAA.a or alias.a!=AAA.a join alias2 on AAA.a=alias2.a or AAA.a!=alias.a left join alias3 on alias3.a=alias2.a or alias3.a!=alias2.a ) tv2) --<< select a1 from CTE21 ) as SUBQ2) select * from CTE1 as T1 join CTE2 as T2 on T1.a1=T2.a1
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1. In MySQL create the test_a table by the following script: CREATE TABLE `test`.`test_a` ( ` a ` int (11) DEFAULT NULL , `b` int (11) DEFAULT NULL ) ENGINE=InnoDB DEFAULT CHARSET=utf8; INSERT INTO `test`.`test_a` (` a `,`b`) VALUES (1,1); INSERT INTO `test`.`test_a` (` a `,`b`) VALUES (1,2); INSERT INTO `test`.`test_a` (` a `,`b`) VALUES (2,1); INSERT INTO `test`.`test_a` (` a `,`b`) VALUES (2,2); INSERT INTO `test`.`test_a` (` a `,`b`) VALUES (3,2); INSERT INTO `test`.`test_a` (` a `,`b`) VALUES (3,10); 2. Add MySQL database configuration in standalone-teiid.xml: <datasource jndi-name= "java:/test" pool-name= "test" enabled= "true" use-java-context= "true" > <connection-url> jdbc:mysql://localhost:3306/test?zeroDateTimeBehavior=convertToNull </connection-url> <driver> mysql </driver> <new-connection-sql> set SESSION sql_mode = 'ANSI' </new-connection-sql> <pool> <min-pool-size> 2 </min-pool-size> <max-pool-size> 70 </max-pool-size> </pool> <security> <user-name> root </user-name> <password> xxxxxx </password> </security> <validation> <valid-connection-checker class-name= "org.jboss.jca.adapters.jdbc.extensions.mysql.MySQLValidConnectionChecker" /> <exception-sorter class-name= "org.jboss.jca.adapters.jdbc.extensions.mysql.MySQLExceptionSorter" /> </validation> <timeout> <blocking-timeout-millis> 120000 </blocking-timeout-millis> <idle-timeout-minutes> 5 </idle-timeout-minutes> </timeout> </datasource> 3. Add in test-vdb.xml java:/test_pg configured in previous step as datasource: <model name= "test" > <property name= "importer.useFullSchemaName" value= "false" /> <property name= "importer.tableTypes" value= "TABLE,VIEW" /> <property name= "importer.importIndexes" value= "false" /> <property name= "importer.importKeys" value= "false" /> <source name= "test" translator-name= "mylobs" connection-jndi-name= "java:/test" /> </model> using "myLobs" as following: <translator name= "mylobs" type= "mysql5" > <property name= "CopyLobs" value= "true" /> <property name= "SupportsNativeQueries" value= "true" /> </translator> 4. run the following query several times in a row: with CTE1 as ( select a1 from ( -->> with CTE11 as ( select a1 from ( WITH alias as ( SELECT 1 as a ), alias1 as ( select alias . a as alias , AAA. a as alias1, AAA.b as a from alias join test.test_a AAA on alias . a !=AAA. a or alias . a !=AAA. a ), alias2 as ( with alias as ( select alias . a as alias , AAA. a as alias1, AAA.b as a from alias join test.test_a AAA on alias . a !=AAA. a or alias . a !=AAA. a ) select * from alias ), alias3 as ( with alias as ( select alias . a as alias , AAA. a as alias1, AAA. a from alias join alias2 AAA on alias . a !=AAA. a or alias . a !=AAA. a ) select * from alias ) SELECT AAA.alias1 as a1 FROM alias join alias1 as AAA on alias . a =AAA. a or alias . a !=AAA. a join alias2 on AAA. a =alias2. a or AAA. a != alias . a left join alias3 on alias3. a =alias2. a or alias3. a !=alias2. a ) tv2) --<< select a1 from CTE11 ) as SUBQ1), CTE2 as ( select a1 from ( -->> with CTE21 as ( select a1 from ( WITH alias as ( SELECT 1 as a ), alias1 as ( select alias . a as alias , AAA. a as alias1, AAA.b as a from alias join test.test_a AAA on alias . a !=AAA. a or alias . a !=AAA. a ), alias2 as ( with alias as ( select alias . a as alias , AAA. a as alias1, AAA.b as a from alias join test.test_a AAA on alias . a !=AAA. a or alias . a !=AAA. a ) select * from alias ), alias3 as ( with alias as ( select alias . a as alias , AAA. a as alias1, AAA. a from alias join alias2 AAA on alias . a !=AAA. a or alias . a !=AAA. a ) select * from alias ) SELECT AAA.alias1 as a1 FROM alias join alias1 as AAA on alias . a =AAA. a or alias . a !=AAA. a join alias2 on AAA. a =alias2. a or AAA. a != alias . a left join alias3 on alias3. a =alias2. a or alias3. a !=alias2. a ) tv2) --<< select a1 from CTE21 ) as SUBQ2) select * from CTE1 as T1 join CTE2 as T2 on T1.a1=T2.a1

when running the following query several times in a row:

with
CTE1 as (
	select a1 from ( 
-->>
		with CTE11 as (select a1 from (
								WITH 
									alias as (SELECT 1 as a),
									alias1 as (select alias.a as alias, AAA.a as alias1, AAA.b as a from alias join test.test_a AAA on alias.a!=AAA.a or alias.a!=AAA.a),
									alias2 as (with alias as (select alias.a as alias, AAA.a as alias1, AAA.b as a from alias join test.test_a AAA on alias.a!=AAA.a or alias.a!=AAA.a) select * from alias),
									alias3 as (with alias as (select alias.a as alias, AAA.a as alias1, AAA.a from alias join alias2 AAA on alias.a!=AAA.a or alias.a!=AAA.a) select * from alias)
								SELECT AAA.alias1 as a1 FROM alias join alias1 as AAA on alias.a=AAA.a or alias.a!=AAA.a join alias2 on AAA.a=alias2.a or AAA.a!=alias.a left join alias3 on alias3.a=alias2.a or alias3.a!=alias2.a
								) tv2) 
--<<
			select a1 from CTE11
	) as  SUBQ1),
CTE2 as (
	select a1 from ( 
-->>
		with CTE21 as (select a1 from (
								WITH 
									alias as (SELECT 1 as a),
									alias1 as (select alias.a as alias, AAA.a as alias1, AAA.b as a from alias join test.test_a AAA on alias.a!=AAA.a or alias.a!=AAA.a),
									alias2 as (with alias as (select alias.a as alias, AAA.a as alias1, AAA.b as a from alias join test.test_a AAA on alias.a!=AAA.a or alias.a!=AAA.a) select * from alias),
									alias3 as (with alias as (select alias.a as alias, AAA.a as alias1, AAA.a from alias join alias2 AAA on alias.a!=AAA.a or alias.a!=AAA.a) select * from alias)
								SELECT AAA.alias1 as a1 FROM alias join alias1 as AAA on alias.a=AAA.a or alias.a!=AAA.a join alias2 on AAA.a=alias2.a or AAA.a!=alias.a left join alias3 on alias3.a=alias2.a or alias3.a!=alias2.a
								) tv2) 
--<<
			select a1 from CTE21
	) as  SUBQ2)  
select * from CTE1 as T1 join CTE2 as T2 on T1.a1=T2.a1

teiid returns the following stacktrace (from teiid 9.3.1):

2017-07-21 16:52:32,440 ERROR [org.teiid.PROCESSOR] (Worker1_QueryProcessorQueue73) oiBQAQPtTMe+ TEIID30019 Unexpected exception for request oiBQAQPtTMe+.15: 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.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.MergeJoinStrategy.process(MergeJoinStrategy.java:165)
        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.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.BatchCollector.collectTuples(BatchCollector.java:164)
        at org.teiid.query.processor.relational.SourceState.prefetch(SourceState.java:211)
        at org.teiid.query.processor.relational.JoinNode.prefetch(JoinNode.java:255)
        at org.teiid.query.processor.relational.JoinNode.nextBatchDirect(JoinNode.java:247)
        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.RelationalPlan.nextBatch(RelationalPlan.java:145)
        at org.teiid.query.processor.QueryProcessor.nextBatchDirect(QueryProcessor.java:151)
        at org.teiid.query.processor.QueryProcessor.nextBatch(QueryProcessor.java:114)
        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:477)
        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)

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