[
https://issues.apache.org/jira/browse/HIVE-17020?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Rui Li reassigned HIVE-17020:
-----------------------------
> Aggressive RS dedup can incorrectly remove OP tree branch
> ---------------------------------------------------------
>
> Key: HIVE-17020
> URL: https://issues.apache.org/jira/browse/HIVE-17020
> Project: Hive
> Issue Type: Bug
> Reporter: Rui Li
> Assignee: Rui Li
>
> Suppose we have an OP tree like this:
> {noformat}
> ...
> |
> RS[1]
> |
> SEL[2]
> / \
> SEL[3] SEL[4]
> | |
> RS[5] FS[6]
> |
> ...
> {noformat}
> When doing aggressive RS dedup, we'll remove all the operators between RS5
> and RS1, and thus the branch containing FS6 is lost.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
