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https://issues.apache.org/jira/browse/PIG-447?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pradeep Kamath updated PIG-447:
-------------------------------
Fix Version/s: types_branch
Assignee: Pradeep Kamath
Affects Version/s: types_branch
> Validation exception when comapring incomparable types in filter
> ----------------------------------------------------------------
>
> Key: PIG-447
> URL: https://issues.apache.org/jira/browse/PIG-447
> Project: Pig
> Issue Type: Bug
> Affects Versions: types_branch
> Reporter: Pradeep Kamath
> Assignee: Pradeep Kamath
> Fix For: types_branch
>
>
> 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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