[
https://issues.apache.org/jira/browse/TAJO-975?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14084370#comment-14084370
]
Hudson commented on TAJO-975:
-----------------------------
SUCCESS: Integrated in Tajo-master-build #324 (See
[https://builds.apache.org/job/Tajo-master-build/324/])
TAJO-975: alias name which is the same to existing column name may cause NPE
during PPD. (hyunsik: rev ae384685f5c16853d47cc4a9a611729dfe2b14fc)
*
tajo-core/src/test/resources/results/TestSelectQuery/testSelectColumnAliasExistingInRelation3.result
* CHANGES
*
tajo-core/src/test/resources/queries/TestSelectQuery/testSelectColumnAliasExistingInRelation3.sql
* tajo-core/src/test/java/org/apache/tajo/engine/query/TestSelectQuery.java
*
tajo-core/src/main/java/org/apache/tajo/engine/planner/rewrite/ProjectionPushDownRule.java
> 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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