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https://issues.apache.org/jira/browse/ARROW-1882?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16277197#comment-16277197
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ASF GitHub Bot commented on ARROW-1882:
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xhochy opened a new pull request #1388: ARROW-1882: [C++] Reintroduce
DictionaryBuilder
URL: https://github.com/apache/arrow/pull/1388
Readded the previous code and moved some small parts to a new common place
to share logic between kernels and builder.
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> [C++] Reintroduce DictionaryBuilder
> -----------------------------------
>
> Key: ARROW-1882
> URL: https://issues.apache.org/jira/browse/ARROW-1882
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++
> Reporter: Uwe L. Korn
> Assignee: Uwe L. Korn
> Priority: Critical
> Labels: pull-request-available
> Fix For: 0.8.0
>
>
> We need the {{DictionaryBuilder}} to incrementally build Arrow Arrays of
> {{DictionaryType}}. The kernels only support en-bloc conversions of Arrays
> which yields a higher memory usage.
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