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https://issues.apache.org/jira/browse/PIG-1221?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jeff Zhang updated PIG-1221:
----------------------------
Status: Patch Available (was: Open)
Affects Version/s: 0.8.0
(was: 0.5.0)
Fix Version/s: 0.8.0
> Filter equality does not work for tuples
> ----------------------------------------
>
> Key: PIG-1221
> URL: https://issues.apache.org/jira/browse/PIG-1221
> Project: Pig
> Issue Type: Bug
> Components: impl
> Affects Versions: 0.8.0
> Environment: Windows and Linux. Java 1.6 hadoop 0.20.1
> Reporter: Neil Blue
> Assignee: Jeff Zhang
> Fix For: 0.8.0
>
> Attachments: PIG_1221.patch
>
>
> From the documentation I understand that it should be possible to filter a
> relation based on the equality of tuples.
> http://wiki.apache.org/pig/PigTypesFunctionalSpec ,
> http://hadoop.apache.org/pig/docs/r0.5.0/piglatin_reference.html#deref:
> However with this data file
> -- indext.txt:
> (1,one) (1,ONE)
> (2,two) (22, twentytwo)
> (3,three) (3,three)
> I run this pig script:
> A = LOAD 'indext.txt' AS (t1:(a:int, b:chararray), t2:(a:int, b:chararray));
> B = FILTER A BY t1==t2; DUMP B;
> Expecting the output:
> ((3,three),(3,three))
> However there is an error:
> 2010-02-03 09:05:20,523 [main] ERROR org.apache.pig.tools.grunt.Grunt
> - ERROR 2067: EqualToExpr does not know how to handle type: tuple
> > Pig Stack Trace
> > ---------------
> > ERROR 2067: EqualToExpr does not know how to handle type: tuple
> > org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1066:
> > Unable to
> > open iterator for alias B
> > at org.apache.pig.PigServer.openIterator(PigServer.java:475)
> > at
> > org.apache.pig.tools.grunt.GruntParser.processDump(GruntParser.java:
> > 532)
> > at
> > org
> > .apache
> > .pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.
> > java:190)
> > at
> > org
> > .apache
> > .pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:166
> > )
> > at
> > org
> > .apache
> > .pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:142
> > )
> > at org.apache.pig.tools.grunt.Grunt.exec(Grunt.java:89)
> > at org.apache.pig.Main.main(Main.java:397)
> > Caused by: org.apache.pig.impl.logicalLayer.FrontendException: ERROR
> > 1002:
> > Unable to store alias B
> > at org.apache.pig.PigServer.store(PigServer.java:530)
> > at org.apache.pig.PigServer.openIterator(PigServer.java:458)
> > ... 6 more
> > Caused by: org.apache.pig.backend.executionengine.ExecException:
> > ERROR 2067:
> > EqualToExpr does not know how to handle type: tuple
> > at
> > org
> > .apache
> > .pig.backend.hadoop.executionengine.physicalLayer.expressionOperat
> > ors.EqualToExpr.getNext(EqualToExpr.java:108)
> > at
> > org
> > .apache
> > .pig.backend.hadoop.executionengine.physicalLayer.relationalOperat
> > ors.POFilter.getNext(POFilter.java:148)
> > at
> > org
> > .apache
> > .pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator
> > .processInput(PhysicalOperator.java:231)
> > at
> > org
> > .apache
> > .pig.backend.local.executionengine.physicalLayer.counters.POCounte
> > r.getNext(POCounter.java:71)
> > at
> > org
> > .apache
> > .pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator
> > .processInput(PhysicalOperator.java:231)
> > at
> > org
> > .apache
> > .pig.backend.hadoop.executionengine.physicalLayer.relationalOperat
> > ors.POStore.getNext(POStore.java:117)
> > at
> > org
> > .apache
> > .pig.backend.local.executionengine.LocalPigLauncher.runPipeline(Lo
> > calPigLauncher.java:146)
> > at
> > org
> > .apache
> > .pig.backend.local.executionengine.LocalPigLauncher.launchPig(Loca
> > lPigLauncher.java:109)
> > at
> > org
> > .apache
> > .pig.backend.local.executionengine.LocalExecutionEngine.execute(Lo
> > calExecutionEngine.java:165)
> Thanks
> Neil
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