Chunhui Shi created DRILL-5353: ---------------------------------- Summary: Merge "Project on Project" generated in physical plan stage Key: DRILL-5353 URL: https://issues.apache.org/jira/browse/DRILL-5353 Project: Apache Drill Issue Type: Bug Reporter: Chunhui Shi Assignee: Chunhui Shi
There is possibility physical plan stage we will get a project-on-project plan. But the ProjectMergeRule(DrillMergeProjectRule) is only for logical planning. We need to apply the rule in physical plan stage as well. And even after planning stage, the JoinPrelRenameVisitor could also inject extra Project which can be merged with (if there is one) Project underneath. -- This message was sent by Atlassian JIRA (v6.3.15#6346)