[PIG-3314] make better symbol resolving order in Pig

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: grunt, parser
• Assignee: Unassigned
• Reporter: Johnny Zhang
• Created: 07/May/13 07:00
• Updated: 17/May/13 08:27

Description

this idea comes when we trying to resolve PIG-2248, please take a look the comments starts from https://issues.apache.org/jira/browse/PIG-2248?focusedCommentId=13648831&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13648831

Basically, we want sure different level of symbol in Pig, when they have name conflict, higher side symbol can mask lover side symbol.

We want first make an agreement on the symbol, then we are going to
(1) add unit tests to make sure it is working as expected, otherwise, open jira and fix it
(2) document the usage

Issue Links

• relates to: PIG-2248 Pig parser does not detect when a macro name masks a UDF name