[
https://issues.apache.org/jira/browse/HIVE-16428?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Chao Sun reassigned HIVE-16428:
-------------------------------
> Refactor & fix the logic in HoS mapjoin optimization
> ----------------------------------------------------
>
> Key: HIVE-16428
> URL: https://issues.apache.org/jira/browse/HIVE-16428
> Project: Hive
> Issue Type: Improvement
> Reporter: Chao Sun
> Assignee: Chao Sun
>
> [The logic for mapjoin optimization in
> HoS|https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/optimizer/spark/SparkMapJoinOptimizer.java#L276]
> seems unnecessarily complex and (perhaps) buggy. For instance, If
> {{bigInputStat}} is null AND the position is not in {{bigTableCandidateSet}},
> then the size for the current position will not be counted into the
> {{totalSize}}. This seems wrong.
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
