NullPointException in GroupingNode.initialize --------------------------------------------- Key: TEIID-4832 URL: https://issues.jboss.org/browse/TEIID-4832 Project: Teiid Issue Type: Bug Components: Query Engine Affects Versions: 9.1.4 Reporter: Bram Gadeyne Assignee: Steven Hawkins Fix For: 9.3, 9.2.2 When executing this query: select year(nv.variabletime) as y, case when dv.varvalue is null then 'missing' else 'wrong' end as t, count(*) as aantal_missing_or_different from wodan_derived_variables nv left join tv_retrieve_dervals dv on dv.admissionid = nv.admissionid and dv.Datetime = nv.variabletime and dv.VariableID = 30003400 where nv.variableid = 'PF' and (dv.varvalue is null or round(nv.numericvalue,0) <> round(dv.varvalue,0)) group by year(nv.variabletime), dv.varvalue is null order by y, t I get an exception: 2017-03-28 11:34:19,461 ERROR [org.teiid.PROCESSOR] (Worker440_QueryProcessorQueue34086834) vF6xRF3a6hIs TEIID30019 Unexpected exception for request vF6xRF3a6hIs.52: java.lang.NullPointerException at org.teiid.query.processor.relational.GroupingNode.initialize(GroupingNode.java:219) at org.teiid.query.processor.relational.RelationalPlan.connectExternal(RelationalPlan.java:96) at org.teiid.query.processor.relational.RelationalPlan.connectExternal(RelationalPlan.java:102) at org.teiid.query.processor.relational.RelationalPlan.connectExternal(RelationalPlan.java:102) at org.teiid.query.processor.relational.RelationalPlan.connectExternal(RelationalPlan.java:102) at org.teiid.query.processor.relational.RelationalPlan.initialize(RelationalPlan.java:91) at org.teiid.query.processor.QueryProcessor.init(QueryProcessor.java:226) at org.teiid.query.processor.QueryProcessor.getBuffer(QueryProcessor.java:289) at org.teiid.query.processor.BatchCollector.collectTuples(BatchCollector.java:154) 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:282) 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)