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Key: PIG-447
URL: https://issues.apache.org/jira/browse/PIG-447
Project: Pig
Issue Type: Bug
Reporter: Pradeep Kamath
Script which gives error:
{noformat}
grunt> a = load 'st10k' as (name:chararray, age:int, gpa:float);
grunt> b = filter a by $0 == 1;
grunt> explain b;
2008-09-22 16:38:24,286 [main] ERROR org.apache.pig.PigServer - Cannot evaluate output type of Equal/NotEqual Operator
2008-09-22 16:38:24,289 [main] ERROR org.apache.pig.PigServer - Severe problem found during validation org.apache.pig.impl.plan.PlanValidationException: An unexpected exception caused the validation to stop
2008-09-22 16:38:24,296 [main] ERROR org.apache.pig.tools.grunt.GruntParser - java.io.IOException: Unable to explain alias b [Cannot evaluate output type of Equal/NotEqual OperatorSevere problem found during validation org.apache.pig.impl.plan.PlanValidationException: An unexpected exception caused the validation to stop]
at org.apache.pig.PigServer.compileLp(PigServer.java:693)
at org.apache.pig.PigServer.compileLp(PigServer.java:631)
at org.apache.pig.PigServer.explain(PigServer.java:466)
at org.apache.pig.tools.grunt.GruntParser.processExplain(GruntParser.java:154)
at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:186)
at org.apache.pig.tools.grunt.GruntParser.parseContOnError(GruntParser.java:93)
at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:58)
at org.apache.pig.Main.main(Main.java:282)
Caused by: org.apache.pig.backend.executionengine.ExecException: Cannot evaluate output type of Equal/NotEqual OperatorSevere problem found during validation org.apache.pig.impl.plan.PlanValidationException: An unexpected exception caused the validation to stop
... 8 more
Caused by: org.apache.pig.impl.plan.PlanValidationException: An unexpected exception caused the validation to stop
at org.apache.pig.impl.plan.PlanValidator.validateSkipCollectException(PlanValidator.java:104)
at org.apache.pig.impl.logicalLayer.validators.TypeCheckingValidator.validate(TypeCheckingValidator.java:40)
at org.apache.pig.impl.logicalLayer.validators.TypeCheckingValidator.validate(TypeCheckingValidator.java:30)
at org.apache.pig.impl.logicalLayer.validators.LogicalPlanValidationExecutor.validate(LogicalPlanValidationExecutor.java:79)
at org.apache.pig.PigServer.compileLp(PigServer.java:660)
... 7 more
Caused by: org.apache.pig.impl.plan.VisitorException: Cannot evaluate output type of Equal/NotEqual Operator
at org.apache.pig.impl.logicalLayer.validators.TypeCheckingVisitor.visit(TypeCheckingVisitor.java:855)
at org.apache.pig.impl.logicalLayer.LOEqual.visit(LOEqual.java:66)
at org.apache.pig.impl.logicalLayer.LOEqual.visit(LOEqual.java:29)
at org.apache.pig.impl.plan.DependencyOrderWalker.walk(DependencyOrderWalker.java:68)
at org.apache.pig.impl.plan.PlanVisitor.visit(PlanVisitor.java:51)
at org.apache.pig.impl.logicalLayer.validators.TypeCheckingVisitor.checkInnerPlan(TypeCheckingVisitor.java:2081)
at org.apache.pig.impl.logicalLayer.validators.TypeCheckingVisitor.visit(TypeCheckingVisitor.java:1629)
at org.apache.pig.impl.logicalLayer.LOFilter.visit(LOFilter.java:101)
at org.apache.pig.impl.logicalLayer.LOFilter.visit(LOFilter.java:32)
at org.apache.pig.impl.plan.DependencyOrderWalker.walk(DependencyOrderWalker.java:68)
at org.apache.pig.impl.plan.PlanVisitor.visit(PlanVisitor.java:51)
at org.apache.pig.impl.plan.PlanValidator.validateSkipCollectException(PlanValidator.java:101)
... 11 more
{noformat}
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