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From "Koji Noguchi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (PIG-5335) Error message from range projection completely misleading
Date Thu, 26 Apr 2018 18:50:00 GMT

     [ https://issues.apache.org/jira/browse/PIG-5335?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Koji Noguchi updated PIG-5335:
------------------------------
    Status: Patch Available  (was: Open)

> 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
>            Priority: Major
>         Attachments: pig-5335-v01.patch
>
>
> {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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