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From "Koji Noguchi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (PIG-5335) Error message from range projection completely misleading
Date Tue, 10 Apr 2018 14:30:00 GMT
Koji Noguchi created PIG-5335:
---------------------------------

             Summary: Error message from range projection completely misleading
                 Key: PIG-5335
                 URL: https://issues.apache.org/jira/browse/PIG-5335
             Project: Pig
          Issue Type: Bug
            Reporter: Koji Noguchi
            Assignee: Koji Noguchi


{code}
A = load 'input.txt' as (a0,a1,a2,a3);
B = FOREACH A GENERATE a0, a1, a2, a3;
store B into '/tmp/deleteme';

C = FOREACH A GENERATE a0, b1, a2, a3;
D = FOREACH C GENERATE a0..a2;
(end of script, no store, nothing)
{code}

Error message
{panel}
2018-04-10 10:22:33,360 \[main] ERROR org.apache.pig.PigServer - exception during parsing:
Error during parsing. Invalid field projection. Projected field \[a0] does not exist in schema:
a0:bytearray,a0:bytearray,a2:bytearray,a3:bytearray.
{panel}

At least two issues.
# Error should be about FOREACH for C referencing non-existing field 'b1'.  But the error
message is saying something about 'a0'.
# Script itself is not using relation C and D at all.  It's confusing to see errors coming
out of unused relations.




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