hadoop-pig-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Viraj Bhat (JIRA)" <j...@apache.org>
Subject [jira] Created: (PIG-502) Limit and Illustrate do not work together
Date Sat, 18 Oct 2008 02:20:44 GMT
Limit and Illustrate do not work together
-----------------------------------------

                 Key: PIG-502
                 URL: https://issues.apache.org/jira/browse/PIG-502
             Project: Pig
          Issue Type: Improvement
          Components: tools
    Affects Versions: types_branch
         Environment: Hadoop 18
            Reporter: Viraj Bhat


Suppose a user want to do an {code} illustrate{code} 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 {code} dump MYDATA; {code} it works..
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
{code}
MYDATA = load 'testfilelarge.txt' as (f1, f2, f3, f4, f5);
MYDATA  = limit MYDATA 10;
describe MYDATA;
-- illustrate MYDATA;
dump MYDATA;
{code}
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message