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Xuefu Zhang commented on PIG-1321: ---------------------------------- Add one more pre-condition: 3. The first foreach statement cannot contain flatten due to its complexity. > Logical Optimizer: Merge cascading foreach > ------------------------------------------ > > Key: PIG-1321 > URL: https://issues.apache.org/jira/browse/PIG-1321 > Project: Pig > Issue Type: Sub-task > Components: impl > Affects Versions: 0.7.0 > Reporter: Daniel Dai > Assignee: Xuefu Zhang > > We can merge consecutive foreach statement. > Eg: > b = foreach a generate a0#'key1' as b0, a0#'key2' as b1, a1; > c = foreach b generate b0#'kk1', b0#'kk2', b1, a1; > => c = foreach a generate a0#'key1'#'kk1', a0#'key1'#'kk2', a0#'key2', a1; -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.