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Posted to dev@pig.apache.org by "Yongning Wu (JIRA)" <ji...@apache.org> on 2015/04/16 07:18:59 UTC

[jira] [Created] (PIG-4510) empty result set after foreach

Yongning Wu created PIG-4510:
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             Summary: empty result set after foreach
                 Key: PIG-4510
                 URL: https://issues.apache.org/jira/browse/PIG-4510
             Project: Pig
          Issue Type: Bug
    Affects Versions: 0.12.0
         Environment: aws EC2
Apache Pig version 0.12.0 (rexported) compiled Jan 24 2015, 01:40:48
            Reporter: Yongning Wu
            Priority: Critical


dataset A is loaded with PigStorage. Then after one filter statement, get B. Then one foreach statement, the result set C is empty. Later use of C would show C is empty depending on what operations may apply on B. 

A = load '$input' using PigStorage('\t', '-schema');
B = filter A by (something);
C = foreach B generate some_field, some_field*some_field; 

then C is empty unless additional operation is made on B. 




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