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Jeff Zhang commented on PIG-1423: --------------------------------- Yes, Olga, I agree with you > Suggest to add clear command in grunt to clear the relation variable > -------------------------------------------------------------------- > > Key: PIG-1423 > URL: https://issues.apache.org/jira/browse/PIG-1423 > Project: Pig > Issue Type: New Feature > Components: grunt > Affects Versions: 0.8.0 > Reporter: Jeff Zhang > Assignee: Jeff Zhang > Fix For: 0.8.0 > > Attachments: PIG-1423.patch > > > The relation name in pig script can been considered as variable of > programming language. One risk of the current grunt is that user may use the > previous defined relation name by typo after a long period of work on grunt. > And it is difficult for users to track this problem. E.g. the following red > "students" is not the user intend to use, but here grunt won't throw any > error meesage. > students = load 'a.txt'; > .... > student = load 'b.txt'; > result = foreach {color:red}students{color} generate $0; > The clear command is to clear the variable defined before, then if users use > the relation name defined before, grunt will throw error message. And this > command also will be useful to let user reuse the relation names especially > when he's doing lots of experiments for one specific task. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.