[ https://issues.apache.org/jira/browse/PIG-502?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Richard Ding resolved PIG-502.
------------------------------
Resolution: Fixed
Hadoop Flags: [Reviewed]
I've verified that, with the latest patch (illustrator_9.patch), limit, cross, and distinct operators work with illustrate command.
> Limit and Illustrate do not work together
> -----------------------------------------
>
> Key: PIG-502
> URL: https://issues.apache.org/jira/browse/PIG-502
> Project: Pig
> Issue Type: Sub-task
> Components: tools
> Affects Versions: 0.2.0
> Environment: Hadoop 18
> Reporter: Viraj Bhat
> Assignee: Yan Zhou
> Fix For: 0.9.0
>
>
> Suppose a user wants to do an illustrate command after limiting his data to a certain number of records, it does not seem to work..
> --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> {code}
> MYDATA = load 'testfilelarge.txt' as (f1, f2, f3, f4, f5);
> MYDATA = limit MYDATA 10;
> describe MYDATA;
> illustrate MYDATA;
> {code}
> --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> Running this script produces the following output and error
> --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> MYDATA: {f1: bytearray,f2: bytearray,f3: bytearray,f4: bytearray,f5: bytearray}
> 2008-10-18 02:14:26,900 [main] INFO org.apache.pig.backend.hadoop.executionengine.HExecutionEngine - Connecting to hadoop fil
> e system at: hdfs://localhost:9000
> 2008-10-18 02:14:27,013 [main] INFO org.apache.pig.backend.hadoop.executionengine.HExecutionEngine - Connecting to map-reduce
> job tracker at: localhost:9001
> java.lang.RuntimeException: Unrecognized logical operator.
> at org.apache.pig.pen.EquivalenceClasses.GetEquivalenceClasses(EquivalenceClasses.java:60)
> at org.apache.pig.pen.DerivedDataVisitor.evaluateOperator(DerivedDataVisitor.java:368)
> at org.apache.pig.pen.DerivedDataVisitor.visit(DerivedDataVisitor.java:273)
> at org.apache.pig.impl.logicalLayer.LOLimit.visit(LOLimit.java:71)
> at org.apache.pig.impl.logicalLayer.LOLimit.visit(LOLimit.java:10)
> 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.pen.LineageTrimmingVisitor.init(LineageTrimmingVisitor.java:98)
> at org.apache.pig.pen.LineageTrimmingVisitor.<init>(LineageTrimmingVisitor.java:90)
> at org.apache.pig.pen.ExampleGenerator.getExamples(ExampleGenerator.java:106)
> at org.apache.pig.PigServer.getExamples(PigServer.java:630)
> at org.apache.pig.tools.grunt.GruntParser.processIllustrate(GruntParser.java:279)
> at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:183)
> at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:84)
> at org.apache.pig.tools.grunt.Grunt.exec(Grunt.java:64)
> at org.apache.pig.Main.main(Main.java:306)
> --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> If I remove the illustrate and replace it with "dump MYDATA;" it works..
> --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> {code}
> MYDATA = load 'testfilelarge.txt' as (f1, f2, f3, f4, f5);
> MYDATA = limit MYDATA 10;
> describe MYDATA;
> -- illustrate MYDATA;
> dump MYDATA;
> {code}
> --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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