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Posted to issues@orc.apache.org by "Owen O'Malley (JIRA)" <ji...@apache.org> on 2018/02/06 22:53:00 UTC

[jira] [Commented] (ORC-297) BloomFilterVersion.ORIGINAL is not honored

    [ https://issues.apache.org/jira/browse/ORC-297?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16354676#comment-16354676 ] 

Owen O'Malley commented on ORC-297:
-----------------------------------

The design was such that the utf-8 version should be ignored by old readers. How do they go wrong? Can you give details, please?

The problem of course is that the non utf-8 bloomfilters can give incorrect results depending on the default encodings in the writer and reader jvms.

> BloomFilterVersion.ORIGINAL is not honored
> ------------------------------------------
>
>                 Key: ORC-297
>                 URL: https://issues.apache.org/jira/browse/ORC-297
>             Project: ORC
>          Issue Type: Bug
>          Components: Java
>    Affects Versions: 1.4.2
>            Reporter: Seshu Pasam
>            Priority: Major
>
> When BloomFilterVersion.ORIGINAL is specified when creating ORC file, it creates both original bloom filter and the later UTF-8 version. This causes problem when third-party software like Hive (1.2), Presto (latest version) read the ORC. I can contribute patch/fix for this!



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