[ https://issues.apache.org/jira/browse/PIG-922?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12747540#action_12747540 ]
Daniel Dai commented on PIG-922: -------------------------------- Hi, Santhosh, What is the intention for List<RequiredField>? It is also the return type of getRequiredFields. RequiredField itself contains multiple fields. I guess List<RequiredField> is intended to separate different input, eg, 1st element of List<RequiredField> is the required inputs from input 1, 2nd element of List<RequiredField> is the required inputs from input 2, is that right? > Logical optimizer: push up project > ---------------------------------- > > Key: PIG-922 > URL: https://issues.apache.org/jira/browse/PIG-922 > Project: Pig > Issue Type: New Feature > Components: impl > Affects Versions: 0.3.0 > Reporter: Daniel Dai > Assignee: Daniel Dai > Fix For: 0.4.0 > > Attachments: PIG-922-p1_0.patch, PIG-922-p1_1.patch, > PIG-922-p1_2.patch > > > This is a continuation work of > [PIG-697|https://issues.apache.org/jira/browse/PIG-697]. We need to add > another rule to the logical optimizer: Push up project, ie, prune columns as > early as possible. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.