Hyunsik Choi created TAJO-975:
---------------------------------
Summary: alias name which is the same to existing column name may
cause NPE during PPD
Key: TAJO-975
URL: https://issues.apache.org/jira/browse/TAJO-975
Project: Tajo
Issue Type: Bug
Components: planner/optimizer
Reporter: Hyunsik Choi
Assignee: Hyunsik Choi
Priority: Minor
Fix For: 0.9.0
The following query will cause NPE. I attached the stacktrace.
{code}
SELECT
T1.l_orderkey
FROM
LINEITEM
INNER JOIN (
SELECT
T1.l_orderkey
FROM (
SELECT
LINEITEM.l_orderkey AS l_orderkey
FROM
LINEITEM
) T1
) T1 ON LINEITEM.l_orderkey=T1.l_orderkey
{code}
{noformat}
2014-07-24 13:58:40,866 ERROR: org.apache.tajo.master.GlobalEngine
(executeQuery(150)) -
Stack Trace:
java.lang.NullPointerException
at
org.apache.tajo.engine.planner.rewrite.ProjectionPushDownRule$TargetListManager.getTarget(ProjectionPushDownRule.java:311)
at
org.apache.tajo.engine.planner.rewrite.ProjectionPushDownRule$TargetListManager$FilteredTargetIterator.<init>(ProjectionPushDownRule.java:362)
at
org.apache.tajo.engine.planner.rewrite.ProjectionPushDownRule$TargetListManager.getFilteredTargets(ProjectionPushDownRule.java:352)
at
org.apache.tajo.engine.planner.rewrite.ProjectionPushDownRule.visitScan(ProjectionPushDownRule.java:1053)
at
org.apache.tajo.engine.planner.rewrite.ProjectionPushDownRule.visitScan(ProjectionPushDownRule.java:43)
at
org.apache.tajo.engine.planner.BasicLogicalPlanVisitor.visit(BasicLogicalPlanVisitor.java:102)
at
org.apache.tajo.engine.planner.BasicLogicalPlanVisitor.visitProjection(BasicLogicalPlanVisitor.java:155)
at
org.apache.tajo.engine.planner.rewrite.ProjectionPushDownRule.visitProjection(ProjectionPushDownRule.java:457)
at
org.apache.tajo.engine.planner.rewrite.ProjectionPushDownRule.visitProjection(ProjectionPushDownRule.java:43)
at
org.apache.tajo.engine.planner.BasicLogicalPlanVisitor.visit(BasicLogicalPlanVisitor.java:63)
at
org.apache.tajo.engine.planner.BasicLogicalPlanVisitor.visitTableSubQuery(BasicLogicalPlanVisitor.java:269)
at
org.apache.tajo.engine.planner.rewrite.ProjectionPushDownRule.visitTableSubQuery(ProjectionPushDownRule.java:1106)
at
org.apache.tajo.engine.planner.rewrite.ProjectionPushDownRule.visitTableSubQuery(ProjectionPushDownRule.java:43)
at
org.apache.tajo.engine.planner.BasicLogicalPlanVisitor.visit(BasicLogicalPlanVisitor.java:99)
at
org.apache.tajo.engine.planner.BasicLogicalPlanVisitor.visitProjection(BasicLogicalPlanVisitor.java:155)
at
org.apache.tajo.engine.planner.rewrite.ProjectionPushDownRule.visitProjection(ProjectionPushDownRule.java:457)
at
org.apache.tajo.engine.planner.rewrite.ProjectionPushDownRule.visitProjection(ProjectionPushDownRule.java:43)
at
org.apache.tajo.engine.planner.BasicLogicalPlanVisitor.visit(BasicLogicalPlanVisitor.java:63)
at
org.apache.tajo.engine.planner.BasicLogicalPlanVisitor.visitTableSubQuery(BasicLogicalPlanVisitor.java:269)
at
org.apache.tajo.engine.planner.rewrite.ProjectionPushDownRule.visitTableSubQuery(ProjectionPushDownRule.java:1106)
at
org.apache.tajo.engine.planner.rewrite.ProjectionPushDownRule.visitTableSubQuery(ProjectionPushDownRule.java:43)
at
org.apache.tajo.engine.planner.BasicLogicalPlanVisitor.visit(BasicLogicalPlanVisitor.java:99)
at
org.apache.tajo.engine.planner.rewrite.ProjectionPushDownRule.visitJoin(ProjectionPushDownRule.java:888)
at
org.apache.tajo.engine.planner.rewrite.ProjectionPushDownRule.visitJoin(ProjectionPushDownRule.java:43)
at
org.apache.tajo.engine.planner.BasicLogicalPlanVisitor.visit(BasicLogicalPlanVisitor.java:87)
at
org.apache.tajo.engine.planner.BasicLogicalPlanVisitor.visitProjection(BasicLogicalPlanVisitor.java:155)
at
org.apache.tajo.engine.planner.rewrite.ProjectionPushDownRule.visitProjection(ProjectionPushDownRule.java:457)
at
org.apache.tajo.engine.planner.rewrite.ProjectionPushDownRule.visitProjection(ProjectionPushDownRule.java:43)
at
org.apache.tajo.engine.planner.BasicLogicalPlanVisitor.visit(BasicLogicalPlanVisitor.java:63)
at
org.apache.tajo.engine.planner.BasicLogicalPlanVisitor.visitRoot(BasicLogicalPlanVisitor.java:145)
at
org.apache.tajo.engine.planner.rewrite.ProjectionPushDownRule.visitRoot(ProjectionPushDownRule.java:440)
at
org.apache.tajo.engine.planner.rewrite.ProjectionPushDownRule.visitRoot(ProjectionPushDownRule.java:43)
at
org.apache.tajo.engine.planner.BasicLogicalPlanVisitor.visit(BasicLogicalPlanVisitor.java:58)
at
org.apache.tajo.engine.planner.rewrite.ProjectionPushDownRule.rewrite(ProjectionPushDownRule.java:77)
at
org.apache.tajo.engine.planner.rewrite.BasicQueryRewriteEngine.rewrite(BasicQueryRewriteEngine.java:63)
at
org.apache.tajo.engine.planner.LogicalOptimizer.optimize(LogicalOptimizer.java:101)
at
org.apache.tajo.master.GlobalEngine.createLogicalPlan(GlobalEngine.java:475)
at
org.apache.tajo.master.GlobalEngine.executeQuery(GlobalEngine.java:145)
{noformat}
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