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Posted to issues@tajo.apache.org by "Hyoungjun Kim (JIRA)" <ji...@apache.org> on 2014/06/18 10:28:02 UTC
[jira] [Created] (TAJO-881) JOIN with union query occurs NPE
Hyoungjun Kim created TAJO-881:
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Summary: 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
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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