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ASF GitHub Bot updated HIVE-26747: ---------------------------------- Labels: pull-request-available (was: ) > 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 > Priority: Minor > Labels: pull-request-available > Time Spent: 10m > Remaining Estimate: 0h > > 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)