Inability to debug pig scripts due to ERROR 2999: "FrontendException cannot be
cast to java.lang.Error" cast error
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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
Fix For: 0.3.0
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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