[
https://issues.apache.org/jira/browse/HIVE-21955?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Zihao Ye updated HIVE-21955:
----------------------------
Component/s: (was: ORC)
> SearchArgumentImpl generates wrong ExpressionTree in some cases which might
> result in loss of data
> ---------------------------------------------------------------------------------------------------
>
> Key: HIVE-21955
> URL: https://issues.apache.org/jira/browse/HIVE-21955
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Reporter: Zihao Ye
> Assignee: Zihao Ye
> Priority: Critical
>
> ExpressionBuilder applies `pushDownNot`, `foldMaybe`, `flatten`,
> `convertToCNF`, `flatten` and `buildLeafList` in order to form a
> non-normalized expression into a CNF expression with the unique leaves.
> After an expression is converted to CNF, there might be more than one
> non-leaf node which are exactly the same object in the expression tree. If
> this happens, those non-leaf node will be visited more than once in
> `buildLeafList` function. As a result, a wrong ExpressionTree is generated.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
