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https://issues.apache.org/jira/browse/PARQUET-2133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17519738#comment-17519738
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Micah Kornfield commented on PARQUET-2133:
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before we start working on it it should probably be discussed on the dev@
mailing list to make sure people are OK with the specification change.
> Support Int8 and Int16 as basic type
> ------------------------------------
>
> Key: PARQUET-2133
> URL: https://issues.apache.org/jira/browse/PARQUET-2133
> Project: Parquet
> Issue Type: Improvement
> Components: parquet-format
> Reporter: Jackey Lee
> Priority: Major
>
> Int8 and Int16 are not supported as basic in previos version. Using 4 bytes
> to store int8 seems not a good idea, which means requiring more storage and
> read and write very slow. Besides, it is not friendly with regular computing
> format, such as velox, arrow, vector and so on.
> With Int8 and Int16 supported, we can get less storage and better performance
> on reading and writing. As for forward compatible, we can use version in
> FileMetaData to choose how to read parquet data.
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