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https://issues.apache.org/jira/browse/PIG-2248?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Johnny Zhang updated PIG-2248:
------------------------------
Status: Patch Available (was: Open)
with this patch, the Pig will throw warning message when macro has the same
name as builtin UDF (all classes under package org.apache.pig.builtin)
I tested it with two macro defined in one Pig script, there is only one warning
message for each macro. The message looks like
{noformat}
[main] WARN org.apache.pig.parser.PigMacro - macro name 'COUNT' masks a
builtin UDF org.apache.pig.builtin.COUNT
[main] WARN org.apache.pig.parser.PigMacro - macro name 'ABS' masks a builtin
UDF org.apache.pig.builtin.ABS
{noformat}
> Pig parser does not detect when a macro name masks a UDF name
> -------------------------------------------------------------
>
> Key: PIG-2248
> URL: https://issues.apache.org/jira/browse/PIG-2248
> Project: Pig
> Issue Type: Bug
> Components: parser
> Affects Versions: 0.9.0
> Reporter: Alan Gates
> Priority: Minor
> Attachments: PIG-2248.patch.txt
>
>
> Pig accepts a macro like:
> {code}
> define COUNT(in_relation, min_gpa) returns c {
> b = filter $in_relation by gpa >= $min_gpa;
> $c = foreach b generate age, name;
> }
> {code}
> This should produce a warning that it is masking a UDF.
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