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Posted to issues@orc.apache.org by "Dongjoon Hyun (Jira)" <ji...@apache.org> on 2021/06/04 04:32:00 UTC

[jira] [Updated] (ORC-800) [ORC]if map.value is selected, map.key should be selected automatically to prevent segment fault.

     [ https://issues.apache.org/jira/browse/ORC-800?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dongjoon Hyun updated ORC-800:
------------------------------
    Affects Version/s: 1.7.0

> [ORC]if map.value is selected, map.key should be selected automatically to prevent segment fault.
> -------------------------------------------------------------------------------------------------
>
>                 Key: ORC-800
>                 URL: https://issues.apache.org/jira/browse/ORC-800
>             Project: ORC
>          Issue Type: Improvement
>          Components: C++
>    Affects Versions: 1.7.0
>            Reporter: Zherui Cao
>            Assignee: Zherui Cao
>            Priority: Major
>             Fix For: 1.7.0
>
>
> Some Tools querying map as a struct so map.key and map.value is independent. But either way map is selected. Then MapVectorBatch is accessible,  then we have change to segment fault in the following situation:
> MapVectorBatch::toString will definitely encounter segment fault if map.key is not selected but map.value is selected. Such a case if it is struct then it's fine. But map has to have keys and elements. then keys is nullptr. this is the cause of segment fault.



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