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https://issues.apache.org/jira/browse/ARROW-9231?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wes McKinney resolved ARROW-9231.
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Resolution: Duplicate
Duplicate of ARROW-9258
> [Format] Increment MetadataVersion from V4 to V5
> ------------------------------------------------
>
> Key: ARROW-9231
> URL: https://issues.apache.org/jira/browse/ARROW-9231
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Format
> Reporter: Wes McKinney
> Assignee: Wes McKinney
> Priority: Blocker
> Fix For: 1.0.0
>
>
> We are making enough non-forward-compatible format changes that we should
> increase the format version to V5 while continuing to accept V4 (because the
> changes we've made are backward compatible) and where relevant implementing a
> V4-compatibility mode that disables features where there are changes between
> 0.17.x and 1.x
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