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From "Shravan Matthur Narayanamurthy (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-382) bincond does not performa implicit cast of parameters
Date Wed, 20 Aug 2008 11:50:47 GMT

    [ https://issues.apache.org/jira/browse/PIG-382?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12623962#action_12623962
] 

Shravan Matthur Narayanamurthy commented on PIG-382:
----------------------------------------------------

Two parts:
1) Why did it not complain earlier?
     This is also related to the GruntParser using things separately. From GruntParser we
only call registerQuery which does not call execute unless it hits a store. Execute gets called
directly from grunt only from processDump(). We need to do type checking inside registerQuery
and not in execute if we want to see the behavior we are expecting.

2) I still need to look at the binCond issue

> bincond does not performa implicit cast of parameters
> -----------------------------------------------------
>
>                 Key: PIG-382
>                 URL: https://issues.apache.org/jira/browse/PIG-382
>             Project: Pig
>          Issue Type: Bug
>    Affects Versions: types_branch
>            Reporter: Olga Natkovich
>            Assignee: Shravan Matthur Narayanamurthy
>            Priority: Critical
>             Fix For: types_branch
>
>
> The following script
> grunt> A = load 'foo' as (name, age, gpa);
> grunt> B = foreach A generate ((name matches 'bob') ? name : '');
> grunt> dump B; 
> produces error below. Also, I am not sure why the error is not produce after just the
second line. You need dump to see the error
> 2008-08-18 13:18:37,442 [main] WARN  org.apache.pig.PigServer - bytearray is implicitly
casted to chararray under LORegexp Operator
> 2008-08-18 13:18:37,442 [main] ERROR org.apache.pig.PigServer - Two inputs of BinCond
do not have compatible types
> 2008-08-18 13:18:37,442 [main] ERROR org.apache.pig.PigServer - Problem resolving LOForEach
schema Two inputs of BinCond do not have compatible types
> 2008-08-18 13:18:37,442 [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
> 2008-08-18 13:18:37,447 [main] ERROR org.apache.pig.tools.grunt.GruntParser - java.io.IOException:
Unable to open iterator for alias: B [Two inputs of BinCond do not have compatible typesProblem
resolving LOForEach schema Two inputs of BinCond do not have compatible typesSevere 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:582)
>         at org.apache.pig.PigServer.execute(PigServer.java:516)
>         at org.apache.pig.PigServer.openIterator(PigServer.java:310)
>         at org.apache.pig.tools.grunt.GruntParser.processDump(GruntParser.java:258)
>         at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:175)
>         at org.apache.pig.tools.grunt.GruntParser.parseContOnError(GruntParser.java:92)
>         at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:58)
>         at org.apache.pig.Main.main(Main.java:278)
> Caused by: org.apache.pig.backend.executionengine.ExecException: Two inputs of BinCond
do not have compatible typesProblem resolving LOForEach schema Two inputs of BinCond do not
have compatible typesSevere 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:549)
>         ... 7 more
> Caused by: org.apache.pig.impl.plan.VisitorException: Problem resolving LOForEach schema
Two inputs of BinCond do not have compatible types
>         at org.apache.pig.impl.logicalLayer.validators.TypeCheckingVisitor.visit(TypeCheckingVisitor.java:2251)
>         at org.apache.pig.impl.logicalLayer.LOForEach.visit(LOForEach.java:88)
>         at org.apache.pig.impl.logicalLayer.LOForEach.visit(LOForEach.java:37)
>         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)

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