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https://issues.apache.org/jira/browse/ARROW-12203?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17314838#comment-17314838
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Antoine Pitrou commented on ARROW-12203:
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Currently "2.0" will emit NANOS, and we don't want to change that. That's why I
was proposing a "1.9" in-between.
> [C++][Python] Switch default Parquet version to 2.0
> ---------------------------------------------------
>
> Key: ARROW-12203
> URL: https://issues.apache.org/jira/browse/ARROW-12203
> Project: Apache Arrow
> Issue Type: Wish
> Components: C++, Python
> Reporter: Antoine Pitrou
> Priority: Major
> Fix For: 4.0.0
>
>
> Currently, Parquet write APIs default to maximum-compatibility Parquet
> version "1.0", which disables some logical types such as UINT32. We may want
> to switch the default to "2.0" instead, to allow faithful representation of
> more types.
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