[ https://issues.apache.org/jira/browse/PIG-1178?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Daniel Dai updated PIG-1178: ---------------------------- Status: Open (was: Patch Available) > LogicalPlan and Optimizer are too complex and hard to work with > --------------------------------------------------------------- > > Key: PIG-1178 > URL: https://issues.apache.org/jira/browse/PIG-1178 > Project: Pig > Issue Type: Improvement > Reporter: Alan Gates > Assignee: Daniel Dai > Attachments: expressions-2.patch, expressions.patch, lp.patch, > lp.patch, pig_1178.patch, pig_1178.patch, PIG_1178.patch, pig_1178_2.patch, > pig_1178_3.patch > > > The current implementation of the logical plan and the logical optimizer in > Pig has proven to not be easily extensible. Developer feedback has indicated > that adding new rules to the optimizer is quite burdensome. In addition, the > logical plan has been an area of numerous bugs, many of which have been > difficult to fix. Developers also feel that the logical plan is difficult to > understand and maintain. The root cause for these issues is that a number of > design decisions that were made as part of the 0.2 rewrite of the front end > have now proven to be sub-optimal. The heart of this proposal is to revisit a > number of those proposals and rebuild the logical plan with a simpler design > that will make it much easier to maintain the logical plan as well as extend > the logical optimizer. > See http://wiki.apache.org/pig/PigLogicalPlanOptimizerRewrite for full > details. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.