[TAJO-1099] LogicalPlanner::convertDataType causes NPE in some cases.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.8.0
• Fix Version/s: 0.9.0
• Component/s: Planner/Optimizer
• Assignee: Hyunsik Choi
• Reporter: Hyunsik Choi
• Created: 06/Oct/14 22:20
• Updated: 15/Oct/14 09:35
• Resolved: 08/Oct/14 16:05

Description

SELECT x, p::interval, to_timestamp(time), to_timestamp(utc / 1000) FROM (SELECT u.x, time - (utc / 1000) as p, time, utc FROM T1 l JOIN T2 u ON l.x = u.x) T WHERE p < 0

2014-10-06 15:17:42,334 ERROR org.apache.tajo.master.GlobalEngine:
Stack Trace:
java.lang.NullPointerException
  at org.apache.tajo.engine.planner.LogicalPlanner.convertDataType(LogicalPlanner.java:1836)
  at org.apache.tajo.engine.planner.TypeDeterminant.visitUnaryOperator(TypeDeterminant.java:60)
  at org.apache.tajo.engine.planner.TypeDeterminant.visitUnaryOperator(TypeDeterminant.java:37)
  at org.apache.tajo.engine.planner.SimpleAlgebraVisitor.visit(SimpleAlgebraVisitor.java:34)
  at org.apache.tajo.engine.planner.TypeDeterminant.determineDataType(TypeDeterminant.java:46)
  at org.apache.tajo.engine.planner.LogicalPlanPreprocessor.visitProjection(LogicalPlanPreprocessor.java:208)
  at org.apache.tajo.engine.planner.LogicalPlanPreprocessor.visitProjection(LogicalPlanPreprocessor.java:40)
  at org.apache.tajo.engine.planner.BaseAlgebraVisitor.visit(BaseAlgebraVisitor.java:55)
  at org.apache.tajo.engine.planner.LogicalPlanner.createPlan(LogicalPlanner.java:129)
  at org.apache.tajo.engine.planner.LogicalPlanner.createPlan(LogicalPlanner.java:119)
  at org.apache.tajo.master.GlobalEngine.createLogicalPlan(GlobalEngine.java:497)