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From "Shubham Chopra (JIRA)" <j...@apache.org>
Subject [jira] Updated: (PIG-207) New illustrate command does not work in mapreduce mode.
Date Tue, 22 Apr 2008 16:05:26 GMT

     [ https://issues.apache.org/jira/browse/PIG-207?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Shubham Chopra updated PIG-207:
-------------------------------

    Attachment: exgen.patch

Patch fixing the bug. The test cases are also modified accordingly to ensure the HDFS connectivity
is established using the MiniCluster

> New illustrate command does not work in mapreduce mode.
> -------------------------------------------------------
>
>                 Key: PIG-207
>                 URL: https://issues.apache.org/jira/browse/PIG-207
>             Project: Pig
>          Issue Type: Bug
>          Components: impl
>    Affects Versions: 0.0.0
>            Reporter: Alan Gates
>            Priority: Minor
>         Attachments: exgen.patch
>
>
> In local mode, illustrate will work.  But if exectype is set to mapreduce, then:
> {noformat}
> grunt> a = load 'data/test.txt';
> grunt> b = filter a by $0 eq 'f2';
> grunt> illustrate b;
> 2008-04-16 00:03:06,512 [main] ERROR org.apache.pig.tools.grunt.GruntParser - java.lang.ClassCastException:
org.apache.pig.backend.hadoop.executionengine.HExecutionEngine cannot be cast to org.apache.pig.backend.local.executionengine.LocalExecutionEngine
>         at org.apache.pig.pen.ExGen.GenerateExamples(ExGen.java:61)
>         at org.apache.pig.PigServer.showExamples(PigServer.java:573)
>         at org.apache.pig.PigServer.showExamples(PigServer.java:569)
>         at org.apache.pig.tools.grunt.GruntParser.processIllustrate(GruntParser.java:131)
>         at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:172)
>         at org.apache.pig.tools.grunt.GruntParser.parseContOnError(GruntParser.java:72)
>         at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:54)
>         at org.apache.pig.Main.main(Main.java:272)
> {noformat}
> dump a and dump b work.

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