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https://issues.apache.org/jira/browse/PIG-5028?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15478149#comment-15478149
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Koji Noguchi commented on PIG-5028:
-----------------------------------
{code:title=testmacro.pig}
DEFINE mymacro (A) RETURNS void {
store $A into 'test${a}${b}${c}';
};
{code}
Run {{pig script1.pig}}
{code:title=script1.pig}
%declare a '1';
%declare b '2';
%declare c '3';
exec testmacro/script2.pig;
{code}
{code:title=script2.pig}
import 'testmacro/testmacro.pig';
%declare b '22';
rel1 = load 'testmacro/input.txt';
mymacro(rel1); // expecting to expand to test1223
exec testmacro/script3.pig;
{code}
{code:title=script3.pig}
%declare c '333';
{code}
This expands to {{test122333}} before PIG-4897,
{{test123}} after PIG-4897, but it should ideally be {{test1223}}.
> Param expansion in macro is confusing
> -------------------------------------
>
> Key: PIG-5028
> URL: https://issues.apache.org/jira/browse/PIG-5028
> Project: Pig
> Issue Type: Bug
> Components: parser
> Reporter: Koji Noguchi
> Assignee: Koji Noguchi
>
> In PIG-3359, we added param expansion inside Macro but it's not clear which
> param would be picked up when defined multiple times.
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