[ https://issues.apache.org/jira/browse/PIG-1618?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Xuefu Zhang updated PIG-1618: ----------------------------- Attachment: NewParser-15.patch Includes: 1. Scalar support 2. Minor parser grammar fixes 3. Better schema validation and more test case. > Switch to new parser generator technology > ----------------------------------------- > > Key: PIG-1618 > URL: https://issues.apache.org/jira/browse/PIG-1618 > Project: Pig > Issue Type: Improvement > Affects Versions: 0.8.0 > Reporter: Alan Gates > Assignee: Xuefu Zhang > Fix For: 0.9.0 > > Attachments: NewParser-1.patch, NewParser-10.patch, > NewParser-11.patch, NewParser-12.patch, NewParser-13.2.patch, > NewParser-13.patch, NewParser-14.patch, NewParser-15.patch, > NewParser-2.patch, NewParser-3.patch, NewParser-3.patch, NewParser-4.patch, > NewParser-5.patch, NewParser-6.patch, NewParser-7.patch, NewParser-8.patches, > NewParser-9.patch, antlr-3.2.jar, javadoc.patch > > > There are many bugs in Pig related to the parser, particularly to bad error > messages. After review of Java CC we feel these will be difficult to address > using that tool. Also, the .jjt files used by JavaCC are hard to understand > and maintain. > ANTLR is being reviewed as the most likely choice to move to, but other > parsers will be reviewed as well. > This JIRA will act as an umbrella issue for other parser issues. -- This message is automatically generated by JIRA. - For more information on JIRA, see: http://www.atlassian.com/software/jira