Krisztian Kasa created HIVE-26747: ------------------------------------- Summary: Remove implementor from HiveRelNode Key: HIVE-26747 URL: https://issues.apache.org/jira/browse/HIVE-26747 Project: Hive Issue Type: Task Components: CBO Reporter: Krisztian Kasa Assignee: Krisztian Kasa
Calcite's VolcanoPlanner [1] relies on calling convention [2]. In Hive this is represented by the [HiveRelNode|https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/reloperators/HiveRelNode.java] interface's {{CONVENTION}} field. This interface has to be implemented by all Hive operators to have the Hive calling convention behavior. The interface also defines the {code:java} void implement(Implementor implementor); {code} method but none of the operators gives an implementation and the method is never called. [1] [https://15721.courses.cs.cmu.edu/spring2017/papers/14-optimizer1/graefe-icde1993.pdf] [2] [https://arxiv.org/pdf/1802.10233.pdf] (Section 4, traits) -- This message was sent by Atlassian Jira (v8.20.10#820010)