[
https://issues.apache.org/jira/browse/HIVE-23090?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Zoltan Haindrich reassigned HIVE-23090:
---------------------------------------
> Introduce a model to describe sub-expression's stat state
> ---------------------------------------------------------
>
> Key: HIVE-23090
> URL: https://issues.apache.org/jira/browse/HIVE-23090
> Project: Hive
> Issue Type: Improvement
> Reporter: Zoltan Haindrich
> Assignee: Zoltan Haindrich
> Priority: Major
>
> In
> [StatsRulesProcFactory|https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/optimizer/stats/annotation/StatsRulesProcFactory.java]
> right now the computation is based on functions which return values of
> numRows; with the extension that the called method may sometimes alter the
> passed Statistics object - this makes the logic a bit trickier here and there
> - having a real model for a subexpression could give natural benefits and may
> help in fixing issues like: HIVE-22238, HIVE-23082
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
