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https://issues.apache.org/jira/browse/TAJO-881?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Hyunsik Choi resolved TAJO-881.
-------------------------------
Resolution: Fixed
Fix Version/s: 0.9.0
committed.
> JOIN with union query occurs NPE
> ----------------------------------
>
> Key: TAJO-881
> URL: https://issues.apache.org/jira/browse/TAJO-881
> Project: Tajo
> Issue Type: Bug
> Reporter: Hyoungjun Kim
> Assignee: Hyoungjun Kim
> Priority: Minor
> Fix For: 0.9.0
>
>
> The following query occurs NPE.
> {code:sql}
> select a.id, b.c_name from (
> select l_partkey as id from lineitem
> union all
> select o_orderkey as id from orders
> ) a
> join customer b on a.id = b.c_custkey
> {code}
> {noformat}
> 2014-06-18 16:33:54,592 ERROR:
> org.apache.tajo.master.querymaster.QueryMasterTask (startQuery(364)) -
> java.lang.NullPointerException
> at
> org.apache.tajo.engine.planner.global.DataChannel.<init>(DataChannel.java:55)
> at
> org.apache.tajo.engine.planner.global.GlobalPlanner.createDataChannelFromJoin(GlobalPlanner.java:178)
> at
> org.apache.tajo.engine.planner.global.GlobalPlanner.buildJoinPlan(GlobalPlanner.java:315)
> at
> org.apache.tajo.engine.planner.global.GlobalPlanner.access$300(GlobalPlanner.java:54)
> at
> org.apache.tajo.engine.planner.global.GlobalPlanner$DistributedPlannerVisitor.visitJoin(GlobalPlanner.java:1106)
> at
> org.apache.tajo.engine.planner.global.GlobalPlanner$DistributedPlannerVisitor.visitJoin(GlobalPlanner.java:967)
> at
> org.apache.tajo.engine.planner.BasicLogicalPlanVisitor.visit(BasicLogicalPlanVisitor.java:84)
> at
> org.apache.tajo.engine.planner.BasicLogicalPlanVisitor.visitRoot(BasicLogicalPlanVisitor.java:142)
> at
> org.apache.tajo.engine.planner.global.GlobalPlanner$DistributedPlannerVisitor.visitRoot(GlobalPlanner.java:972)
> at
> org.apache.tajo.engine.planner.global.GlobalPlanner$DistributedPlannerVisitor.visitRoot(GlobalPlanner.java:967)
> at
> org.apache.tajo.engine.planner.BasicLogicalPlanVisitor.visit(BasicLogicalPlanVisitor.java:58)
> at
> org.apache.tajo.engine.planner.global.GlobalPlanner.build(GlobalPlanner.java:134)
> at
> org.apache.tajo.master.querymaster.QueryMasterTask.startQuery(QueryMasterTask.java:356)
> at
> org.apache.tajo.master.querymaster.QueryMasterTask.start(QueryMasterTask.java:176)
> at
> org.apache.tajo.master.querymaster.QueryMaster$QueryStartEventHandler.handle(QueryMaster.java:380)
> at
> org.apache.tajo.master.querymaster.QueryMaster$QueryStartEventHandler.handle(QueryMaster.java:371)
> at
> org.apache.tajo.master.TajoAsyncDispatcher.dispatch(TajoAsyncDispatcher.java:137)
> at
> org.apache.tajo.master.TajoAsyncDispatcher$1.run(TajoAsyncDispatcher.java:79)
> at java.lang.Thread.run(Thread.java:744)
> {noformat}
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