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https://issues.apache.org/jira/browse/ARROW-15018?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17456470#comment-17456470
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Kartik Subbarao commented on ARROW-15018:
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Just adding a note that this is relevant to
https://github.com/wesm/feather/issues/200
> DataFrame Index modified during Feather serialization round trip
> ----------------------------------------------------------------
>
> Key: ARROW-15018
> URL: https://issues.apache.org/jira/browse/ARROW-15018
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Affects Versions: 3.0.0, 6.0.1
> Reporter: Mike
> Priority: Major
>
> Some (or all) indexes are converted to a {{RangeIndex}} after a Feather
> serialization/deserialization round trip. I came across this in pyarrow 3.0.0
> and 6.0.1 for both a {{MultiIndex}} and an empty dataframe
> ({{{}Dataframe.index{}}} -> {{{}RangeIndex{}}}).
>
> Please feel free to modify priority and issue type as appropriate, thanks!
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