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Posted to issues@orc.apache.org by "Yiqun Zhang (Jira)" <ji...@apache.org> on 2022/03/04 06:34:00 UTC

[jira] [Updated] (ORC-1121) Pushdown filters don't evaluate due to wrong column-conversion-safety judgment

     [ https://issues.apache.org/jira/browse/ORC-1121?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yiqun Zhang updated ORC-1121:
-----------------------------
    Attachment: image-2022-03-04-14-33-22-050.png

> Pushdown filters don't evaluate due to wrong column-conversion-safety judgment
> ------------------------------------------------------------------------------
>
>                 Key: ORC-1121
>                 URL: https://issues.apache.org/jira/browse/ORC-1121
>             Project: ORC
>          Issue Type: Bug
>          Components: Java
>    Affects Versions: 1.6.11
>            Reporter: Penglei Shi
>            Priority: Major
>         Attachments: image-2022-03-04-14-33-22-050.png
>
>
> RecordReaderImpl::pickRowGroups() will check if filter-column is safe for ppd evaluation with file column id, but the parameter of SchemaEvolution::isPPDSafeConversion is reader column id, which is different from file column id, and this causes pushed filters can't be evaluated and recordReader can't skip row groups which are not matched.



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