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https://issues.apache.org/jira/browse/ARROW-13271?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Diana Clarke resolved ARROW-13271.
----------------------------------
Assignee: Diana Clarke
Resolution: Duplicate
Fixed in ARROW-13275
> [JS] DataFrame Count By - TypeError: df.countBy is not a function
> -----------------------------------------------------------------
>
> Key: ARROW-13271
> URL: https://issues.apache.org/jira/browse/ARROW-13271
> Project: Apache Arrow
> Issue Type: Bug
> Components: JavaScript
> Reporter: Diana Clarke
> Assignee: Diana Clarke
> Priority: Minor
>
> The following benchmark fails with {{TypeError: df.countBy is not a
> function}}.
> {code}
> b.suite(
> `DataFrame Count By`,
> ...countBys.map((column: string) => b.add(
> `dataset: ${name}, column: ${column}, length:
> ${formatNumber(df.length)}, type: ${df.schema.fields.find((c)=> c.name ===
> column)!.type}`,
> () => df.countBy(column)
> )),
> b.cycle(cycle)
> );
> {code}
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