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https://issues.apache.org/jira/browse/PIG-751?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Olga Natkovich resolved PIG-751.
--------------------------------

      Resolution: Fixed
    Release Note: please, reopen if there is a reproducible case

> Inability to debug pig scripts due to ERROR 2999: "FrontendException cannot 
> be cast to java.lang.Error" cast error
> ------------------------------------------------------------------------------------------------------------------
>
>                 Key: PIG-751
>                 URL: https://issues.apache.org/jira/browse/PIG-751
>             Project: Pig
>          Issue Type: Bug
>          Components: grunt
>    Affects Versions: 0.3.0
>            Reporter: Viraj Bhat
>
> I have an input file which is being loaded by BinStorage()
> {code}
> myinput = LOAD 'partfile' USING BinStorage() AS (eid:long, url:chararray, 
> title:chararray, index:int, num_candidates:int, num_inlinks:int, inlinks);
> lim_myinput = limit myinput 100;
> dump lim_myinput;
> {code}
> I get the following error: 
> =========================================================================================================================================
> 2009-04-03 00:50:57,490 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 
> 2999: Unexpected internal error. 
> org.apache.pig.impl.logicalLayer.FrontendException cannot be cast to 
> java.lang.Error
> =========================================================================================================================================
> ERROR 2999: Unexpected internal error. 
> org.apache.pig.impl.logicalLayer.FrontendException cannot be cast to 
> java.lang.Error
> java.lang.ClassCastException: 
> org.apache.pig.impl.logicalLayer.FrontendException cannot be cast to 
> java.lang.Error
>         at 
> org.apache.pig.impl.logicalLayer.parser.QueryParser.BaseExpr(QueryParser.java:1098)
>         at 
> org.apache.pig.impl.logicalLayer.parser.QueryParser.Expr(QueryParser.java:804)
>         at 
> org.apache.pig.impl.logicalLayer.parser.QueryParser.Parse(QueryParser.java:595)
>         at 
> org.apache.pig.impl.logicalLayer.LogicalPlanBuilder.parse(LogicalPlanBuilder.java:60)
>         at org.apache.pig.PigServer.parseQuery(PigServer.java:311)
>         at org.apache.pig.PigServer.registerQuery(PigServer.java:277)
>         at 
> org.apache.pig.tools.grunt.GruntParser.processPig(GruntParser.java:529)
>         at 
> org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:280)
>         at 
> org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:99)
>         at org.apache.pig.tools.grunt.Grunt.exec(Grunt.java:88)
>         at org.apache.pig.Main.main(Main.java:352)
> =========================================================================================================================================
> It seems that the error is caused during the schema creation, in 
> BinStorage(), however this error is not reported!! If I use PigStorage() the 
> error goes away but the results are incorrect.
> {code}
> myinput = LOAD 'partfile' USING PigStorage() AS (eid:long, url:chararray, 
> title:chararray, index:int, num_candidates:int, num_inlinks:int, inlinks);
> {code}
> Currently it is not possible to find out where the error really occurred but 
> to manually inspect each keyword.

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