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From "Viraj Bhat (JIRA)" <j...@apache.org>
Subject [jira] Created: (PIG-1247) Error Number makes it hard to debug: ERROR 2999: Unexpected internal error. org.apache.pig.backend.datastorage.DataStorageException cannot be cast to java.lang.Error
Date Sat, 20 Feb 2010 02:33:27 GMT
Error Number makes it hard to debug: ERROR 2999: Unexpected internal error. org.apache.pig.backend.datastorage.DataStorageException
cannot be cast to java.lang.Error
---------------------------------------------------------------------------------------------------------------------------------------------------------------------

                 Key: PIG-1247
                 URL: https://issues.apache.org/jira/browse/PIG-1247
             Project: Pig
          Issue Type: Bug
          Components: impl
    Affects Versions: 0.6.0
            Reporter: Viraj Bhat
             Fix For: 0.7.0


I have a large script in which there are intermediate stores statements, one of them writes
to a directory I do not have permission to write to. 

The stack trace I get from Pig is this:

2010-02-20 02:16:32,055 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 2999: Unexpected
internal error. org.apache.pig.backend.datastorage.DataStorageException cannot be cast to
java.lang.Error

Details at logfile: /home/viraj/pig_1266632145355.log

Pig Stack Trace
---------------

ERROR 2999: Unexpected internal error. org.apache.pig.backend.datastorage.DataStorageException
cannot be cast to java.lang.Error
java.lang.ClassCastException: org.apache.pig.backend.datastorage.DataStorageException cannot
be cast to java.lang.Error
        at org.apache.pig.impl.logicalLayer.parser.QueryParser.StoreClause(QueryParser.java:3583)
        at org.apache.pig.impl.logicalLayer.parser.QueryParser.BaseExpr(QueryParser.java:1407)
        at org.apache.pig.impl.logicalLayer.parser.QueryParser.Expr(QueryParser.java:949)
        at org.apache.pig.impl.logicalLayer.parser.QueryParser.Parse(QueryParser.java:762)
        at org.apache.pig.impl.logicalLayer.LogicalPlanBuilder.parse(LogicalPlanBuilder.java:63)
        at org.apache.pig.PigServer$Graph.parseQuery(PigServer.java:1036)
        at org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:986)
        at org.apache.pig.PigServer.registerQuery(PigServer.java:386)
        at org.apache.pig.tools.grunt.GruntParser.processPig(GruntParser.java:720)
        at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:324)
        at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:168)
        at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:144)
        at org.apache.pig.tools.grunt.Grunt.exec(Grunt.java:89)
        at org.apache.pig.Main.main(Main.java:386)
================================================================================

The only way to find the error was to look at the javacc generated QueryParser.java code and
do a System.out.println()


Here is a script to reproduce the problem:

{code}
A = load '/user/viraj/three.txt' using PigStorage();
B = foreach A generate ['a'#'12'] as b:map[] ;
store B into '/user/secure/pigtest' using PigStorage();
{code}

"three.txt" has 3 lines which contain nothing but the number "1".

{code}
$ hadoop fs -ls /user/secure/

ls: could not get get listing for 'hdfs://mynamenode/user/secure' : org.apache.hadoop.security.AccessControlException:
Permission denied: user=viraj, access=READ_EXECUTE, inode="secure":secure:users:rwx------

{code}


Viraj

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