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https://issues.apache.org/jira/browse/ARROW-6820?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bryan Cutler resolved ARROW-6820.
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Resolution: Fixed
Issue resolved by pull request 5821
[https://github.com/apache/arrow/pull/5821]
> [C++] [Doc] [Format] Map specification and implementation inconsistent
> ----------------------------------------------------------------------
>
> Key: ARROW-6820
> URL: https://issues.apache.org/jira/browse/ARROW-6820
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++, Documentation, Format
> Reporter: Antoine Pitrou
> Priority: Blocker
> Labels: pull-request-available
> Fix For: 1.0.0
>
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> In https://arrow.apache.org/docs/format/Layout.html#map-type, the map type is
> specified as having a child field "pairs", itself with children "keys" and
> "items".
> In https://github.com/apache/arrow/blob/master/format/Schema.fbs#L60, the map
> type is specified as having a child field "entry", itself with children "key"
> and "value".
> In the C++ implementation, a map type has a child field "entries", itself
> with children "key" and "value".
> In the Java implementation, a map vector also has a child field "entries",
> itself with children "key" and "value" (by default).
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