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https://issues.apache.org/jira/browse/HIVE-11595?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14717814#comment-14717814
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Sergey Shelukhin commented on HIVE-11595:
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Full footer buffer is not always available, see the comments. I considered
that, but the omnly way around this is to have "fake" full footer buffer with
fake offsets into it (ie the buffer will only have the footer and offsets wil
cover the entire buffer), but it's hacky
> refactor ORC footer reading to make it usable from outside
> ----------------------------------------------------------
>
> Key: HIVE-11595
> URL: https://issues.apache.org/jira/browse/HIVE-11595
> Project: Hive
> Issue Type: Bug
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Attachments: HIVE-10595.patch, HIVE-11595.01.patch,
> HIVE-11595.02.patch, HIVE-11595.03.patch
>
>
> If ORC footer is read from cache, we want to parse it without having the
> reader, opening a file, etc. I thought it would be as simple as protobuf
> parseFrom bytes, but apparently there's bunch of stuff going on there. It
> needs to be accessible via something like parseFrom(ByteBuffer), or similar.
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