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From "Olga Natkovich (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (PIG-447) Validation exception when comapring incomparable types in filter
Date Tue, 23 Sep 2008 00:52:44 GMT

     [ https://issues.apache.org/jira/browse/PIG-447?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Olga Natkovich resolved PIG-447.
--------------------------------

    Resolution: Fixed

patch committed. thanks, pradeep

> 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
>
>         Attachments: PIG-447.patch
>
>
> 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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