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https://issues.apache.org/jira/browse/HIVE-9555?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14366672#comment-14366672
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Prasanth Jayachandran commented on HIVE-9555:
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Its needed for
https://github.com/apache/hive/blob/llap/llap-server/src/java/org/apache/hadoop/hive/llap/io/decode/orc/stream/readers/CharacterStreamReader.java#L37
to handle char and varchar in the same class.
> assorted ORC refactorings for LLAP on trunk
> -------------------------------------------
>
> Key: HIVE-9555
> URL: https://issues.apache.org/jira/browse/HIVE-9555
> Project: Hive
> Issue Type: Bug
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Attachments: HIVE-9555.01.patch, HIVE-9555.02.patch,
> HIVE-9555.03.patch, HIVE-9555.04.patch, HIVE-9555.05.patch,
> HIVE-9555.06.patch, HIVE-9555.07.patch, HIVE-9555.patch
>
>
> To minimize conflicts and given that ORC is being developed rapidly on trunk,
> I would like to refactor some parts of ORC "in advance" based on the changes
> in LLAP branch. Mostly it concerns making parts of ORC code (esp. SARG, but
> also some internal methods) more modular and easier to use from alternative
> codepaths. There's also significant change to how data reading is handled -
> BufferChunk inherits from DiskRange; the reader receives a list of
> DiskRange-s (as before), but instead of making a list of buffer chunks it
> replaces ranges with buffer chunks in the original (linked) list.
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